“AND” relation in custom taxonomies

Question

@the_dramatist My functions.php file contains:

function core_rewrite_rules() {

    global $wp_rewrite;

    $new_rules = array(

'tax1/(.+?)/tax2/(.+?)/tax3/(.+?)/tax4/(.+?)/tax5/(.+?)/?$' => 'index.php?post_type=my-custom-post-type&tax1=' . $wp_rewrite->preg_index(1) . '&tax2=' . $wp_rewrite->preg_index(2) . '&tax3=' . $wp_rewrite->preg_index(3) . '&tax4=' . $wp_rewrite->preg_index(4) . '&tax5=' . $wp_rewrite->preg_index(4),

    );
    $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}
add_action( 'generate_rewrite_rules', 'core_rewrite_rules' );

My autogenerated htaccess:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress