A robots.txt file is not an correct or efficient technique for blocking delicate or private material. It only instructs perfectly-behaved crawlers the web pages are not for them, but it doesn't stop your server from providing those web pages to a browser that requests them. One particular purpose is search https://www.sehow.fr/referencement-wordpress-le-guide-pour-les-debutants/#.YUjQIbgzaUk