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 yang » wang yan, wang yanling
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) OR (wang yang)) ((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) OR (wang yang)) ((bang dai) OR (wang li)) test housing costs using un ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang liang) OR (wang yang)) ((bang dai) or (wang li)) test housing costs using un ;".
• Adding a wildcard symbol may retrieve word variants: ((wang liang) OR (wang yang)) ((bang dai) or (wang li)) test housing costs using un ;*.