excludeQuery = excludeQuery.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) ||