wordpress Search function is not working

OK, just to clarify your question. Your problem is with the search form not appearing in the top right corner? All I see there is a search image, but no input field. The search functionality does work on your site, eg: http://lunetours.com/?s=destination but something’s not configured properly there either, as it’s not returning any results.

Now, as to why your search form is not appearing, there’s not enough code or information to figure this out. Have you tried turning on WP(“debug”) in wp-config.php?

define('WP_DEBUG', true);