The Data Search Tool in Matrix is a great way to track down any occurrences of a string of text (even HTML attributes or metadata values), but it forces you to browse the results within the tool.

You can't share the results (aside from explaining the search terms/parameters used so it can be repeated, and you'd need to keep the results tab open and have another if you need to go through a lot of them.

You can copy the results, but you get things like the buttons and icons for finding in the asset tree, etc. so it's not useful for reference outside of the Matrix UI.

Ideally, there would be a function to export to CSV, Excel or PDF (as these are the most useful for editors, compared to developers).