add " ? " in url via htaccess RewriteRule

PHP Snippet 1:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{QUERY_STRING} ^/([a-z]+)/f_search$
RewriteRule ^/?(?:([a-z]+)/)?new\.php$ /f_search.php?langs=$1&langs=%1

PHP Snippet 2:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^/?([a-z]+)/new.php$ f_search.php?langs=$1 [L,NC]