In my PPC, there are a lot of ASINS in my auto campaign as customer search terms. I know that customers don't actually search these ASINS, but rather my ad just shows up on their listing. If I wanted to remove them, do I just put the ASIN as a negative term? It doesn't seem to be working. How do I get rid of these, so I don't show up on their listing, because the ACOS is too high. Thanks!