Joining the bandwagon and 
to what everyone said in the comments. My expectation: the search in the Assets-panel only finds the published components, for the libraries that I have enabled for the file in which I’m working on. Anything else is a distraction.
@ moderators (like @Gleb ): this get help topic thread also relates to this feature request (as it’s poster, Dario commented above) : Components from unpublished library show up in search results
I posted comments there first, before I found this feature request (and found the other similar topics on this same issue).