Hello Guys;
i'm having problems with the backend K2 filters for the articles, the ones on top left.

Problem occur when i try to search cities or words with just three letters, this will bring to a white result instead of showing several articles.
Is there any way to remove this kind of limit or reduce it to two letter instead of three?
Many thanks as usual.

Hello,

K2 uses MySQL's full text search - dev.mysql.com/doc/refman/5.0/en/fulltext-search.html so I am afraid it is not possible.

Hello Krikor,
thank for the prompt reply!
Wih google i've found a solution to this:
www.itoctopus.com/k2-search-not-working-for-3-letter-words-heres-how-to-fix
But this apply to the front end and i'm getting problems finding the file that control the search into the backend aswell, may you kindly suggest it?
Thanks.

This would be considered a hack and I would strongly advise you against performing these tasks.
The administrator search is not a module. It is bundled inside the component view.