app/Http/Controllers/Admin/DepartmentController.php

@@ -33,6 +33,7 @@ public function index()
 
     return $this->vuew('index', [
       'departments' => department::where('name', 'LIKE', "%{$q}%")
+        ->orWhere('description', 'LIKE', "%{$q}%")
         ->select([
           'id',
           'name',

app/Models/department.php

@@ -24,7 +24,7 @@ class department extends Model
      */
     protected $fillable = [
         'name',
-        'description',
+        'description'
     ];
 
     /**