Special searchs

By default, Relevanssi replaces the hyphen in your search term with a space, leaving you with “k on”, which probably doesn’t find anything.

Try adding this to your theme functions.php, indexing the database again and then searching:

add_filter('relevanssi_remove_punctuation', 'fixhyphens1', 9);
function fixhyphens1($a) {
   $a = str_replace('-', 'HYPHENHYPHEN', $a);
   return $a;
}

add_filter('relevanssi_remove_punctuation', 'fixhyphens2', 11);
function fixhyphens2($a) {
   $a = str_replace('HYPHENHYPHEN', '-', $a);
   return $a;
}