Can`t make search page working

Hello guys. Got a problem with search functionality. After i select all required data in search form and clicked check avaibility i got search page with search form but wihout any results.
Yes, i have rooms, i created and selected all required capacities and other things.
By the way book on single room page is working correctly.
No js errors were, so i cant understand why it doesnt working.
And will be very thankful if you can provide something similiar to woocommerce functions and hooks documentation, becayse trying to customize plugin for custom theme is like a big pain.