Variables location use for yoast

I found this script in forum, but have some problem i hope somebody can fix this

function retrieve_var1_replacement( $var1 ) {

	$location_terms=geodir_get_current_location_terms();
	$city=$location_terms['gd_city'];
	$region=$location_terms['gd_region'];
	$country=$location_terms['gd_country'];

	if(!empty($city))
		return $city ;
	
	if(!empty($region))
		return $region ;
	
	if(!empty($country))
		return $country ;
	
	return '';
}
 
function register_my_plugin_extra_replacements() {
		wpseo_register_var_replacement( '%%current_location%%', 'retrieve_var1_replacement', 'advanced', 'Use this is for current location' );
		
 }
 add_action( 'wpseo_register_extra_replacements', 'register_my_plugin_extra_replacements' );
 ?>

I use in location “quận tân bình” but result is “quan-tan-binh” how to fix this to see result is “quận tân bình”?

And i need 1 variable include “city, state, country”