drupal KCW + local kaltura CE = not results found

I've installed the kaltura CE server in my localhost to use with all in one video drupal plugin, because I need to custom the KCW and later KSE.
That works well by modifying the uiconf xml file.

Now I have a new problem. No research work.
Video, Image and audio, I have the same message:

"We didn't find results for ..."

I know about youtube, that's disabled
http://www.kaltura.org/search-result-not-working-properly

But how can I implement my custom search API?
I'll have my proper database, how can I use my php function when I click on "search" button for example.

Someone has a idea?

ps: I'm behind a proxy.