Hmmmmm. Dont think so. Use literals like "OETR"
http://www.google.com/search?num=100&hl=en&lr=lang_en&ie=UTF-8&newwindow=1&q=%22OETR%22&btnG=Search
I get about 100 hits.
Yes, but are there any remaining hits prior to 9/8/2004. I don't see any.
I don't know if it's exactly possible to scrub google. If you update a page and request a rescan, I assume that google will reflect the new content. If you remove a page, it might show up in the google archives.
I got 658 hits for "OETR, Bush", point is, none of them predated 9/8/04.