Getting archive pages in WP's AJAX internal link finder?
marked as duplicate by Rarst♦ Aug 2 '11 at 9:03
This question was marked as an exact duplicate of an existing question.
Right now there are no hooks to do that from a plugin and the function that makes the search query itself is not pluggable which means that the only way to achieve that is to hack core files.
Currently there is an open Trac Ticket asking for some kind of hook.