public List <SachModel> TimKiemSanPham(string keyWord, int?minPrice, int?maxPrice, int?pageIndex, int?pageSize, int?chude, int?nhaxuatban, bool?lowToHighPrice, bool?newestFirst, out long total)
{
var kq = _res.TimKiemTongQuat(keyWord, minPrice, maxPrice, pageIndex, pageSize, chude, nhaxuatban, lowToHighPrice, newestFirst, out total);
return(kq);
}