Perhaps you should try some spelling variations:
costs missing » costs arising, costs timing, costs using
costs driving » costs arising, costs defining, points driving
test housing » cost housing, test using, era housing
wang liang » wang yang
bang dai » zhang dai
wang li » wang lei, wang lin, tang 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 ((bang dai) OR (wang li)) test housing ((costs missing) OR (costs driving)) un ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang ((bang dai) or (wang li)) test housing ((costs missing) or (costs driving)) un ;*.