How do you limit your searches in the new Yahoo Answers format?

When I try to limit my search to last 7 days, I get hundreds of answers dating back to the beginning of the site.|||The search features on YA have not functioned properly since YA started. Long time users beg for fixes and have basically given up trying to get them. You can post the problem on the suggestion board. They may try to fix this new glitch you are seeing.