Maybe there is some trick I'm unaware of?
But when a fighter has name, containing more than two pieces, search by name is basically useless. Try to find someone like Juan Carlos Martinez...
Something is seriously wrong with the logic of this search engine.
Search function
Re: Search function
For looking up fighters with a double first name it's best to first press the magnifying glass button that's next to the search field. You can then enter first and last names separately. Otherwise the search engine will automatically interpret the second name as being the last name. Hope this helps.