Perhaps you should try some spelling variations:
yuan chen » yuan cheng, sudan chen, yuan chang
yuan wang » yan wang, yuan kang, yuan chang
wang ning » wang jing, wang liang, wang yang
wong shiu » wong siu, cong shu, song shin
yun chen » yung chen, yu chen, yuan cheng
ning jin » ying jin, jing ji, yang jin
sar » sara, star, saur

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: yan ((yuan chen) OR (yun chen)) yuan wang ning jin ((wong shiu) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yan ((yuan chen) OR (yun chen)) yuan wang ning jin ((wong shiu) or (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: yan ((yuan chen) OR (yun chen)) yuan wang ning jin ((wong shiu) or (kong sar)) ;*.