I would like to be able to use these symbols #!data in my urls and get the text after the symbols to send it by PHP and do a search.
I would like to implement this method with .htaccess and I would like to know how to do it.
Thanks in advance.
It is not possible , since tags (or snippets - everything after # ) are never sent to the server. Instead, they are managed by the customer.
An alternative is to obtain it with JavaScript, once the resource has been accessed. That is, when the page has already been loaded.
In JavaScript you get with window.location.hash .
In your case it would be
RewriteEngine on
RewriteRule ^buscar/(.*)$ buscador.php?data=$1
Then you put link and you're done.