Original Code:

static function filter ( $request, $columns, &$bindings )
	{
		$globalSearch = array();
		$columnSearch = array();
		$dtColumns = self::pluck( $columns, 'dt' );

		if ( isset($request['search']) && $request['search']['value'] != '' ) {
			$str = $request['search']['value'];

			for ( $i=0, $ien=count($request['columns']) ; $i<$ien ; $i++ ) {
				$requestColumn = $request['columns'][$i];
				$columnIdx = array_search( $requestColumn['data'], $dtColumns );
				$column = $columns[ $columnIdx ];

				if ( $requestColumn['searchable'] == 'true' ) {
					$binding = self::bind( $bindings, '%'.$str.'%', PDO::PARAM_STR );
					$globalSearch[] = "`".$column['db']."` LIKE ".$binding;
				}
			}
		}

Changed Code:

static function filter ( $request, $columns, &$bindings )
	{
		$globalSearch = array();
		$columnSearch = array();
		$dtColumns = self::pluck( $columns, 'dt' );

		if ( isset($request['search']) && $request['search']['value'] != '' ) {
			$str = $request['search']['value'];

			for ( $i=0, $ien=count($request['columns']) ; $i<$ien ; $i++ ) {
				$requestColumn = $request['columns'][$i];
				$columnIdx = array_search( $requestColumn['data'], $dtColumns );
				$column = $columns[ $columnIdx ];

				if ( $requestColumn['searchable'] == 'true' ) 
				$strArray = explode(' ',$str);
				foreach ($strArray as $str)
				{
					$binding = self::bind( $bindings, '%'.$str.'%', PDO::PARAM_STR );
					$globalSearch[] = "`".$column['db']."` LIKE ".$binding;
				}
			}
		}