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
wang9 d » wang d

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 (wang9 d)) test housing ((bonds rating) OR (bonds using)) a ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ning ((zhang dai) OR (wang9 d)) test housing ((bonds rating) OR (bonds using)) a ;".
• Adding a wildcard symbol may retrieve word variants: wang ning ((zhang dai) OR (wang9 d)) test housing ((bonds rating) OR (bonds using)) a ;*.