Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yuan wang » yan wang, yuan kang, qian wang
han china » hang china, than china, can china
china dan » china den, china data, china des
dan yang » daun yang, tan yang, wang yang
wong yue » wang yue, hong yu
di wong » dr wong, kie wong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan wang) OR (yuan chang)) han china dan yang di wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) OR (yuan chang)) han china dan yang di wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) OR (yuan chang)) han china dan yang di wong yue ;*.