Too many sites have useless titles, or URLs that if you go back to you don't get to the same state you had when you closed the window. So, I find that history is for the most part useless. Sometimes it works - but not reliably.

Vimium - press shift-T - search among all page titles and URLs of open tabs.

Why is that better than searching history or bookmarks?

Bookmarks are long-term useful things to keep saved, and don't serve the same purpose as these open tabs.

As for history, imagine you're researching a topic and have gone through fifteen search results, decided three of them were relevant, and closed the others. Your history is polluted with all fifteen, whereas this tab search will directly return you these most relevant pages only.

You can also search open tabs in the address bar: https://support.mozilla.org/en-US/kb/address-bar-autocomplet...

I hardly use it, though, because I usually have < 100 open tabs, not thousands like others have. I identify tabs by their tree structures (parents, children, siblings tabs) and the prefixes of the titles, whose lengths don't depend on how many tabs opened, because the tabs are arranged vertically.