Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, china zhang
chen zheng » chen zhen, chen aizheng, chen zhe
yan yuan » yan guan, fang yuan, nan yan
chen hao » cheng han
xin song » jin song, xin tong, kim song
yuan zi » yan zi, yuan li, yuan fei
wang » wing, wan, lang

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: wang yan yuan zi ((((chen zheng) OR (cheng zhang))) OR (chen hao)) xin song (shin OR sein) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yuan zi ((((chen zheng) OR (cheng zhang))) or (chen hao)) xin song (shin or sein) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan yuan zi ((((chen zheng) OR (cheng zhang))) or (chen hao)) xin song (shin or sein) ;*.