That said, I'm specifically talking about trying to search things that Google doesn't index, like a Discord server, an internal wiki, or a specific non-textual filter on a public site. As mentioned, I tried searching for a specific Twitter thread about V from people I follow and didn't find it because they just called it "V", which on Twitter returns a ton of results for things like court cases.

I'm sure if I spent forever massaging my query I could track it down, but if it was called "vlang" or "VL" or something similarly distinct it wouldn't be a problem. For example, PHP, Perl, OCaml, SQL, Prolog, etc. are all quite easy to find regardless of where and how I'm looking.