public ActionResult PartialSanPhamLienQuan(int number)
{
var currentProduct = Int32.Parse(Request.Url.AbsoluteUri.Split('/')[4]);
var product = sanpham.GetSameProduct(currentProduct, number);
var rand = new Random();
var sameProduct = product.Skip(rand.Next(product.Count)).ToList();
return(PartialView(sameProduct));
}