Perhaps you should try some spelling variations:
housing bonds » housing costs
test housing » cost housing, test using, era housing
wang ning » wang jing, wang liang, wang yang
using ann » using bank, using a, using ai
bang dai » zhang dai
using un » using 15n, using _, using a
yang » lang

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

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