Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
dan yang » daun yang, tan yang, wang yang
yang jin » yang jie, yang jun, ying jin
yang lin » wang lin, yang liang, huang lin
wang ai » wang di, wang li, wang yan
ai test » api test, i test, ii test
yang li » yang di, yang xi, yang yi
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dan yang) or (yang yang)) wang ai test ((yang jin) or (((yang li) OR (yang lin)))) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dan yang) OR (yang yang)) wang ai test ((yang jin) OR (((yang li) OR (yang lin)))) hong yu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dan yang) or (yang yang)) wang ai test ((yang jin) or (((yang li) OR (yang lin)))) hong yu ;".
• Adding a wildcard symbol may retrieve word variants: ((dan yang) or (yang yang)) wang ai test ((yang jin) or (((yang li) OR (yang lin)))) hong yu ;*.