If you search for an object that isn´t available in the current language you won´t get it in the search_result variable, but the search_count variable will increased.

Steps to reproduce

Create a site with the languages English and German.
Create a site access with the only language German.
Create an content object in the language English.
Search in the site access for the created content object.
You will get no result but an search_count of 1.