Following discussion with support team, it appears that the search by URL is not yet implemented (only search by DOMAIN name works), although the documentation suggest it should. This is a very important function in order to be able to investigate activities (security related or not).
It is clearly not possible to manually parse thousands of details log entries for a domain name to find all that matches a particular URL. The only workaround provided is to create a new category for every single URL we need to investigate and can't really be used.
Example:
- search for www.youtube.com works
- search for http://www.youtube.com/watch?v=IAJbMng_Q3U don't
Thanks,
Julien