diff --git a/README.md b/README.md
index 96106b3..cf8b99b 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,9 @@
 [![Total Downloads](https://img.shields.io/packagist/dt/ghonijee/query-adapter.svg?style=flat-square)](https://packagist.org/packages/ghonijee/query-adapter)
 [![Actions Status](https://github.com/ghonijee/laravel-query-adapter/actions/workflows/main.yml/badge.svg)](https://github.com/ghonijee/laravel-query-adapter/actions)
 
+## Documentation
+Full Documentation [QueryAdapter Docs](https://query-adapter.netlify.app/docs/). This site documentation is under development.
+
 ## Installation
 
 You can install the package via composer:
diff --git a/config/dx-adapter.php b/config/dx-adapter.php
index b0751d6..d2a0681 100644
--- a/config/dx-adapter.php
+++ b/config/dx-adapter.php
@@ -12,6 +12,6 @@
         'take' => 'take',
     ],
     'query' => [
-        'contains' => 'LIKE'
+        'contains' => 'like'
     ]
 ];
diff --git a/src/FilterClass/QueryClass/StringFilter.php b/src/FilterClass/QueryClass/StringFilter.php
index f5edfce..b610713 100644
--- a/src/FilterClass/QueryClass/StringFilter.php
+++ b/src/FilterClass/QueryClass/StringFilter.php
@@ -9,12 +9,14 @@ class StringFilter
     protected $query;
     protected $filterData;
     protected $conjungtion;
+    protected $contains;
 
     public function __construct($query, $filterData, $conjungtion)
     {
         $this->query = $query;
         $this->filterData = $filterData;
         $this->conjungtion = $conjungtion;
+        $this->contains = config('dx-adapter.query.contains') ?: "like";
     }
 
     public static function build($query, $filterData, $conjungtion)
@@ -43,16 +45,16 @@ protected function notCondition()
     {
         switch ($this->filterData->condition) {
             case 'contains':
-                $this->query->orWhere($this->filterData->field, 'not like', "%{$this->filterData->value}%");
+                $this->query->orWhere($this->filterData->field, "not $this->contains", "%{$this->filterData->value}%");
                 break;
             case 'notcontains':
-                $this->query->orWhere($this->filterData->field, 'like', "%{$this->filterData->value}%");
+                $this->query->orWhere($this->filterData->field, "$this->contains", "%{$this->filterData->value}%");
                 break;
             case 'startswith':
-                $this->query->orWhere($this->filterData->field, 'not like', "{$this->filterData->value}%");
+                $this->query->orWhere($this->filterData->field, "not $this->contains", "{$this->filterData->value}%");
                 break;
             case 'endswith':
-                $this->query->orWhere($this->filterData->field, 'not like', "%{$this->filterData->value}");
+                $this->query->orWhere($this->filterData->field, "not $this->contains", "%{$this->filterData->value}");
                 break;
             case '=':
                 $this->query->whereNot($this->filterData->field, $this->filterData->value);
@@ -67,16 +69,16 @@ protected function orCondition()
     {
         switch ($this->filterData->condition) {
             case 'contains':
-                $this->query->orWhere($this->filterData->field, 'like', "%{$this->filterData->value}%");
+                $this->query->orWhere($this->filterData->field, "$this->contains", "%{$this->filterData->value}%");
                 break;
             case 'notcontains':
-                $this->query->orWhere($this->filterData->field, 'not like', "%{$this->filterData->value}%");
+                $this->query->orWhere($this->filterData->field, "not $this->contains", "%{$this->filterData->value}%");
                 break;
             case 'startswith':
-                $this->query->orWhere($this->filterData->field, 'like', "{$this->filterData->value}%");
+                $this->query->orWhere($this->filterData->field, "$this->contains", "{$this->filterData->value}%");
                 break;
             case 'endswith':
-                $this->query->orWhere($this->filterData->field, 'like', "%{$this->filterData->value}");
+                $this->query->orWhere($this->filterData->field, "$this->contains", "%{$this->filterData->value}");
                 break;
             case '=':
                 $this->query->orWhere($this->filterData->field, $this->filterData->value);
@@ -90,16 +92,16 @@ protected function andCondition()
     {
         switch ($this->filterData->condition) {
             case 'contains':
-                $this->query->where($this->filterData->field, 'like', "%{$this->filterData->value}%");
+                $this->query->where($this->filterData->field, "$this->contains", "%{$this->filterData->value}%");
                 break;
             case 'notcontains':
-                $this->query->where($this->filterData->field, 'not like', "%{$this->filterData->value}%");
+                $this->query->where($this->filterData->field, "not $this->contains", "%{$this->filterData->value}%");
                 break;
             case 'startswith':
-                $this->query->where($this->filterData->field, 'like', "{$this->filterData->value}%");
+                $this->query->where($this->filterData->field, "$this->contains", "{$this->filterData->value}%");
                 break;
             case 'endswith':
-                $this->query->where($this->filterData->field, 'like', "%{$this->filterData->value}");
+                $this->query->where($this->filterData->field, "$this->contains", "%{$this->filterData->value}");
                 break;
             case '=':
                 $this->query->where($this->filterData->field, $this->filterData->value);
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 47b77e0..6e4d101 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -44,7 +44,7 @@ protected function usesMySqlConnection(Application $app)
         $app->config->set('dx-adapter.request.order', 'sort');
         $app->config->set('dx-adapter.request.skip', 'skip');
         $app->config->set('dx-adapter.request.take', 'take');
-        $app->config->set('dx-adapter.query.contains', 'LIKE');
+        $app->config->set('dx-adapter.query.contains', 'like');
     }
 
     protected function getPackageProviders($app)