Finding all system messages?

[Jonathan5]

我直到今天这个旧帖子被自动顶上来才看到。但我最近问了类似的问题，并得到了一个有用的答案：

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.