Doesn't https://www.google.com/search?q=your+search+query&ei=...&sta... give you page 3? Or at least, try jittering it a bit and compare to frontpage results.

> &start= parameter. This parameter controls which result number the page starts with. Google displays 10 results per page by default. For page 1, start=0 For page 2, start=10 For page 3, start=20