The current search feature as seen in the
demo, is what you get. I'm not exactly sure what you mean by "if u click on one part, it changes the jobs shown, then if u then click on another it changes it again."? The fields to complete in the search are pretty obvious i.e. keywords or location, so perhaps I'm misunderstanding what you're seeing?
I guess ultimately though, if you want the search to work differently to how it is right now, you could customize it yourself. Potentially the search may undergo future enhancements as the theme versions progress but for the moment this is it.