Google did for a long time have a page documenting those features. Picked a random date from around the time I know they had that. Clicked Adcanced Search, the

Google did for a long time have a page documenting those features. Picked a random date from around the time I know they had that. Clicked Adcanced Search, then a link near the top of the page to Advanced Search Tips. https://web.archive.org/web/20041017053307/http://www.google.com/help/refinesearch.html https://web.archive.org/web/20041017053307/http://www.google...