Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
zhang jing » zhang ming, zhang jin, zhang ting
zhang ping » zhang ming, zhang ting, zhang ying
yuan wang » yan wang, yuan kang, yuan chang
chang seo » chang deok, chang soon, change sea
yang jun » yang jui, pang jun, yang jin
jun she » jian she

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)) yang jun she ((zhang jing) OR (zhang ping)) chang seo ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (yuan cheng)) yang jun she ((zhang jing) OR (zhang ping)) chang seo ;~".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (yuan cheng)) yang jun she ((zhang jing) OR (zhang ping)) chang seo ;*.