I don't think I can do that. What information are you wanting to see?
I did some further testing...
I have four Notebooks; 1 is shared and 3 are private. The note I wanted to find is in the shared notebook.
If I "search in all notes" the note I want is not found. A note from one of the private notebooks is found, so the search is working, but incompletely.
If I "search in shared" i.e., the shared notebook, the search results do contain the note I wanted.
'Search in all notes' should search the notes in the shared notebook, right?