The results of my screener have no result.

    I made up a few screeners a few days ago. At that time , I got more than one hundred stocks for each screeners. I thought the screens  was normal at that time.

But , the screens is not in good status today. For example, when I did   "sunkouliang index " . I got no results.   A few days ago, I got more than one hundred stocks.

Would you please help me?