xenforo search (mysql boolean full-text search operators): minus, quotation marks, asterisk as wildcard suffix, vertical or bar (maybe more if you feel like testing it);
and/plus is the default for no operator;
additional filtering options in advanced search;
bbcode is searchable (but for some tags you may need to restrict it to posted by specific member iirc);
"this thread" search is available from the quick search or by frankensteining &c[thread]=id into search query url (change f95zone.to/search/id_number/ search id to a random number too if you're modifying an already-searched query or you'll see the unmodified cached search);
you can change quick search default order in your profile prefs.
latest updates page is a separate thing.