Thunderbird v115 made Search really hard to use
When I use the Global Search, it does find the emails I'm looking for, that match the terms.
But, once I click on one of the results, all it does is open a new tab with ALL the emails of that thread.
Now I have to go through each of them, until I find again what I want, but it's not easy.
Even if I try to use the "Filter these messages" box (in that tab with all the emails of the thread), that never works there (even if I enable "Body").
Alla svar (1)
Please try https://support.mozilla.org/en-US/kb/rebuilding-global-database
If you still have a problem, please create a new post.