Perhaps you should try some spelling variations:
housing bonds » housing costs
test housing » cost housing, test using, era housing
yang liang » wang liang, yan liang, yang yang
kong saur » kong siu, kong your, wong sau
yan wang » yuan wang, yang yang, qian wang
ii test » ai test, i test, api test
sar » sara, star

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang liang) or (yan wang)) ii test housing bonds ((kong saur) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang liang) OR (yan wang)) ii test housing bonds ((kong saur) OR (kong sar)) ;.
• Adding a wildcard symbol may retrieve word variants: wang ((yang liang) or (yan wang)) ii test housing bonds ((kong saur) or (kong sar)) ;*.