Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
china reza » china real
yuan wang » yan wang, yuan kang, yuan chang
china ren » china loren, china real, china r
wang yue » wong yue, wang hua, wang yan
dr wang » dr wong, mr wang, der zwang
yan » yang, ryan

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 cheng)) than ((china reza) OR (china ren)) yan dr wang yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yuan cheng)) than ((china reza) OR (china ren)) yan dr wang yue ;~".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yuan cheng)) than ((china reza) OR (china ren)) yan dr wang yue ;*.