Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
china data » china update, chinese data
yuan wang » yan wang, yuan kang, qian wang
han china » hang china, than china, can china
data yang » apa 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 data yang di wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan chang)) han china data yang di wong yue ;.
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yuan chang)) han china data yang di wong yue ;*.