subQuery = subQuery.Where(x => x.FieldValue1.ToLower().Contains(searchKey) ||
                                                       x.FieldValue2.ToLower().Contains(searchKey) ||
                                                       x.FieldValue3.ToLower().Contains(searchKey) ||
                                                       x.FieldValue4.ToLower().Contains(searchKey) ||
                                                       x.FieldValue5.ToLower().Contains(searchKey) ||