Perhaps you should try some spelling variations:
housing bonds » housing costs
davis test » david west, davis tsu
davis best » david west, davis robert
kong young » kang young, among young, young young
kong star » kong sar
yan yang » yang yang, yao yang, dan yang
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 test) OR (davis best)) housing bonds ((kong young) OR (kong star)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yang ((davis test) OR (davis best)) housing bonds ((kong young) or (kong star)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan yang ((davis test) OR (davis best)) housing bonds ((kong young) or (kong star)) ;*.