Advanced Search Function

Well, as now we had the tag function, what about adding advanced search function? Just like others site's advanced search, we can put tag filter function, so we can search more than one tag at a time.
Hmm... to put it simply, maybe like mangafox's advanced manga search function? That's really helpful.

This has been asked about on this forum quite a bit.
No official reply yet, but it's probably on the long to-do list of F!...