Finding all system messages?

[Jonathan5]

I hadn’t seen this old topic until it was automatically bumped today. But I asked essentially the same question recently and got a helpful answer:

List of customisable strings

I’d like to check what messages the system sends to users, and maybe customise them. Anything I type in as a search term in Customise–Text (eg “flag” or “system_mesages”) shows up “more than 50 results” so I don’t get to see them all. Thanks.