Auction house - no cards with $notowned

Hi there, sorry. I don't know what I'm doing wrong. I sometimes go to the auction house and type in $notowned in the filter and search for monster cards I don't own. I only have about 55% so I expect cards to show up but none do. Today there's almost 2,000 cards and I can't get the filter to work. I downloaded the new yaclt and ah addons after the patch. If someone has time to explain what I can do it'd be appreciated thanks

Thanks both for the help. Using those filters does not provide the intended result. I tried a combination. Although using the filter "You don't" produces results, it also gives cards owned. The filter "$notowned" does not work. Using both filters together does not show only cards not owned. I may have to do it manually. For a minute there I thought it worked.