How would you diagnose a site like this? And I mean, it exclusively, only ever shows up after "Results for similar searches". It's not "end of results" per se - there could still be full 10 pages of results shown for the query but my site's listing will only show after "Results for similar searches" which in some cases could be on page 1. So it could actually be in a decent position #5 or #6 but only if there are just 3-4 "normal" results and the rest - "Results for similar searches".
In other words, it looks like it ranks fine within the "Results for similar searches" subset but nowhere in the normal results?
What would you say the problem is?