False hits from Google-search?

I run a norwegian language WP-blog with Slimstat on Dreamhost. I get a lot of hits from google-search-results, most of these are valid. But some of these are obviously wrong, like I get multiple hits on keywords like

“david bain photos of bodies”
“history channel predator x torrent”
“robert kardashian obituary”

When I try to search for the exact keywords in google, my blog is not found, not even if I specify my blog with the “site:”-constructor. AWstats does confirm these hits.

This is new, haven’t experienced it before this month. Anybody else got similar experiences?