Perhaps you should try some spelling variations:
test housing » cost housing, test using, era housing
bonds rating » bonds ratings, bond rating, bond ratings
bonds using » bounds using, bonds being, lands using
wang ning » wang jing, wang liang, wang yang
zhang dai » zhang fan, zhang wei, zhang yan
wang di » yang di, wang d, wang li

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