Reply To: The date in printed in english, how to show it in the site language?

Try:

add_filter('asp_results', 'asp_custom_date_time');
function asp_custom_date_time($results) {
    foreach($results as $k=>&$r){
		if ( isset($r->post_type) ) {
			$r->date = human_time_diff(get_the_time('U', $r->id), current_time('timestamp')) . ' fa';
		}
    }
    return $results;
}