IMPORTANT: Since Total 3.6.0 this no longer applies because the subheading has been removed. To alter the search results title you need to use a different filter to alter the page header title "string".
function myprefix_custom_search_for_text( $string ) {
if ( is_search() ) {
return 'Search results for: '. esc_html( get_search_query( false ) ); /// CHANGE THIS LINE
}
return $string;
}
add_filter( 'wpex_post_subheading', 'myprefix_custom_search_for_text' );