Perhaps you should try some spelling variations:
housing costs » housing census
test housing » cost housing, test using, era housing
costs using » tests using, costs arising, costs missing
wang liang » wang yang
bang dai » zhang dai
using un » using ann, using 15n, using _
wang li » wang lei, wang lin, tang li

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang liang ((bang dai) or (wang li)) test housing costs using un ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ((bang dai) OR (wang li)) test housing costs using un ;.
• Adding a wildcard symbol may retrieve word variants: wang liang ((bang dai) or (wang li)) test housing costs using un ;*.