public function search($searchStr)
    {
        $conditions = [];

        $parsedStr = $this->parseSearchStr($searchStr);

        foreach ($this->searchable() as $column) {
            $conditions[] = $column.' like "'.$parsedStr.'"';
        }

        $method = $this->searchOperator.'Raw';
        $query  = $this->query()->{$method}('('.join(' OR ', $conditions).')');

        if ($this->sort) {
            $this->applySort($query, $searchStr);
        }

        return $query;
    }