Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
guan rene » juan rene, glas rene
gan guan » yan guan, quan guan, fan guon
yang jin » yang jie, ying jin, shang jin
yang jun » yang jui, pang jun, yang judy
wong sau » wong sam, wong siu, wong shiu
yan gan » yan guan, yan clan, yan wang
yang yi » yang xi, yang jui

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: zhang yan gan guan rene ((((((yang jin) OR (yang yi))) OR (yang jun))) OR (yang di)) wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: zhang yan gan guan rene ((((((yang jin) or (yang yi))) or (yang jun))) or (yang di)) wong sau ;*.