I know you can just search but viewing the results in a dedicated page/tool would be better to manage duplicate entries (with the same name for example). To check if the entry is really a duplicate.
Perhaps a split view to see 2 “entries” at the same time.
So you can decide what to do: delete the duplicate, merge the content, re-write them, etc…
REAL WORLD USE CASES
The thing with Anytype is you can add a lot of entries with the same name and if you do not have the time to check if the entry exists beforehand or for another reason, you can have multiple entry for the same subject.