Perhaps you should try some spelling variations:
housing bonds » housing costs
test housing » cost housing, test using, era housing
yang davis » wang david
kong young » kang young, among young, young young
yang dali » yang di, bang dai, yang all
kong star » kong sar
wang » wing, wan, lang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((yang davis) OR (yang dali)) test housing bonds ((kong young) OR (kong star)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((yang davis) OR (yang dali)) test housing bonds ((kong young) or (kong star)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((yang davis) OR (yang dali)) test housing bonds ((kong young) or (kong star)) ;*.