How to block them folder in ngnix

How to block them folder in ngnix ?
I check my site in this site
and every one can see my plugins folder and themes’s folders!
How can I solved that?
I used these codes but it seems it doesn’t work at all.

location ~* /(?:uploads|files)/.*.php$ {
deny all;
}
location ~* /wp-includes/.*.php$ {
deny all;
access_log off;
log_not_found off;
}
location ~* /wp-content/.*.php$ {
deny all;
access_log off;
log_not_found off;
}
location ~* /(?:uploads|files)/.*.php$ {
deny all;
}