Perhaps you should try some spelling variations:
yuan chang » huang chang, han chang, xuan thang
yuan cheng » huang cheng, yu cheng, tan cheng
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
di wang » li wang, wei wang

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

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