Ok, then:
Category = Country
Sub cat = Province/city
Sub sub cat = District
Street = in the topic title, people can use the search function.
Or you have to couple 2 of of your category needs together. The 2 where there is less categories. You seem to already want to do this with Province/city. You could do:
Cat = Country/Province
Sub cat = City/District
Sub sub cat = Street
Type trade and type property = Tags
It seems doable if you adapt yourself a little. Or you need to dig in the plugin possibilities, or another forum software.