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
zhang dai » zhang fan, zhang wei, zhang yan
yang » lang
dong » doing, long, done
housing » housigng, housindg, housking
sin » sign, sind, skin

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 ((zhang dai) or (yang di)) test housing bonds dong sin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ning ((zhang dai) OR (yang di)) test housing bonds dong sin ;.
• Adding a wildcard symbol may retrieve word variants: wang ning ((zhang dai) or (yang di)) test housing bonds dong sin ;*.