public ActionResult Index(TimKiemModel timKiemModel)
        {
            timKiemModel.SearchString = (string.IsNullOrEmpty(timKiemModel.SearchString))?string.Empty:timKiemModel.SearchString.Trim();
            ViewBag.SearchStr         = timKiemModel.SearchString;
            var result = SimSoDepRepository.TimKiemSimSo(timKiemModel);

            return(View(result));
        }