Perhaps you should try some spelling variations:
housing costs » housing census
test housing » cost housing, test using, era housing
costs rating » costs creating, costs savings, costs arising
wang liang » wang yang
rating und » reading und, framing und, ring und
wang di » yang di, wang d, wang li

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ((zhang fan) OR (wang di)) test housing costs rating und ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang ((zhang fan) or (wang di)) test housing costs rating und ;*.