Sql Query Like by Multiple columns

Hello, i use SQL QB and it's fine, but i need use more flexible - need find data by one string but in multiple concat columns (first_name, last_name, patronymic).
For example i need find string "Mark Suckerberg" in first_name + last_name columns (without OR, AND) - need generate sql part as "where (first_name + last_name) like '%string%'", but SQL QB like, orLike generated extra escaping and it's not work correctly:

PHP Code:

...
if (isset($_GET['search'])) {
  $this->userModel->like('phone', $_GET['search']);
  $this->userModel->orLike('email', $_GET['search']);
  $this->userModel->orLike('(last_name + first_name + patronymic)', $_GET['search']);
}
$this->data->users = $this->userModel->orderBy('id','desc')->withDeleted()->paginate(25); 


Any suggestion?