>>183
Try a few video sites. Try the names related to the video in the site's search engine.
If you can find a different video with the same girl or made by the same people, check the uploader's account for more videos. The comment sections are usually worthless but sometimes someone puts a name, search string or some other sauce.
In the old days we had a direct-download/rapidshare search. It eventually got old and the FBI killed direct downloads for everyone when they took down megaupload. There's an FTP search engine run by a russian bloke, there's a chance that what you're looking for is on some public FTP server that just happened to be indexed by the bot. If you've ever read fravia's searchlores then you should. They're old but they cover the philosophy of searching the net.
You can download stuff in bulk from ddl sites using plowshare, and there are cli tools for downloading from mega as well.
Often searching for every filename you have relating to a particular girl can reveal additional pics and videos that someone has collected. You can also check the 4chan archive and if it's a swf it'll be on the swfchan archive.
I imagine a lot of the stuff from old camgirls would be put in some kind of mega.co.nz folder. I'm not sure of any good way for searching stuff on mega, and maybe it's intentionally hard to search so that it doesn't get shut down.
The holy grail was a disappointment.