unspecified terms returns uwpqsftaxoall

This depends on your search.php (I assume you are using the default search template). If your theme using the get_search_query() to get the search terms, then you can using following modification in your theme functions.php

function search_all_text($search_term){
    if($search_term == 'uwpqsftaxoall' || $search_term == 'uwpqsfcmfall'){
       return ''; //return nothing or you can define your own, eg 'Search All'
    }
    return $search_term;
}
add_filter('get_search_query','search_all_text');