Regarding the last 100 results, prior to "Next" on my search results I see the pages of results listed by number; click on the last one to get the last results and work backwards from there if you want. No?
Well, I could keep clicking until I've clicked up to 100,000,000 pages (@ 10 hits/page), but that would take a bit more time than I care to invest in a rhetorical project. (The number I see appears to increase four pages per click.)