Are you referring to a problem in Yahoo Finance? Then the one place I have found to get the attention of a Yahoo staff member is to re-post your query in the category 'Yahoo Products,' subcategory 'Yahoo Finance.' That is the place where you have an almost certain chance for your question to be noticed by and to get a competent answer by a Yahoo staff member. They have been quite useful to me in the past in helping me fix a problem or at least I got an explanation of what was happening. They also can tell their programmers to get working on a problem.
When I select new screen and select certain criteria, it's not giving screener results, its saying o out of 0