Yes. Look at the query:

    search?q=site%3Ahttp%3A%2F%2Fwww.google.com 
    %2F%2Fsearch%3Fq%3Dproranktracker.com%2B%2B 
    %2BHostgator%2BCoupon%2BCode%3ACOUPON333&pws=0& 
    hl=en#pws=0&hl=en&q=site:http:%2F%2Fwww.google.com 
    %2F%2Fsearch

Even if you take the search string site:http://www.google.com//search and put it into a fresh Google search, it only returns HostGator coupons. Maybe someone from Google can explain it.

add -hostgator to the search query and you'll find best-seller-watches.com dominating the list. Add that one to your query and things get really strange.

https://www.google.com/webhp?gws_rd=ssl#safe=off&q=site:goog...

Ah, I didn't notice! Interesting.