Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
than china » tuan china, han china, wuhan china
yuan wang » yan wang, yuan kang, qian wang
china dan » china den, china data, china des
dan yang » daun yang, tan yang, wang yang
wang yue » wong yue, wang yan, wang he

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)) than china dan yang di ((wang yue) OR (wang hua)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan chang)) than china dan yang di ((wang yue) OR (wang hua)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yuan chang)) than china dan yang di ((wang yue) OR (wang hua)) ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yuan chang)) than china dan yang di ((wang yue) OR (wang hua)) ;*.