@klu9 you're welcome! Another option is "in:library" that searches your bookmarks! (& possibly boosts?)
The way my brain works (& maybe yours too) I often remember a topic & a rough sense of when I encountered it, but rarely do I remember exact details. I can find stuff again because I'm a liberal bookmarker & poster. I think it won't search quiet/unlisted so I don't post that way anymore.

I learned these tips from my instance admin & from @FediTips

I'm so grateful to be on the fediverse. I was trying to remember a resource. I searched my Notes app full of years of ideas. Yes the topic I searched was referenced but unfortunately without the speaker's name. I think I will remember it going forward but I often forget who said something. I searched the Internet. Irrelevant results deluged me. Finally I wondered if I've been on fedi long enough to have said it here. Made the same search here with "from:me" & got it!

Huzzah #fediverse huzzah!