That's an epic search but at least of all a wind at the end.
Sadly the ability to search via the usual suspects has diminished greatly from 2015 onwards, not all of it is on lack lustre efforts of search engines involved, some of the data had become just too hard to get from within forums where human intelligence rules. Of course the lack of competition from new search engines isn't good either, too many sites aim to block all but the top handful of bots from their content ...
Sadly the ability to search via the usual suspects has diminished greatly from 2015 onwards, not all of it is on lack lustre efforts of search engines involved, some of the data had become just too hard to get from within forums where human intelligence rules. Of course the lack of competition from new search engines isn't good either, too many sites aim to block all but the top handful of bots from their content ...