Why the desktop searchbar is sophisticated not like the online one?

while I am writing and u need to insert a citation, sometimes (lot of 'sumtimes) I don’t remember the exact term!
what I do us going back to the online and search there to find the article\s.

  1. is there option to search in the desktop app? (to use it as searching engine, not have to remember the EXACT term? and if there option to apply all the references on endnote desktop?

hope that I clear enough

Sincerely

Shadi