Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
zhang han » zhang fan, zhang yan, zhang hanmo
yong kee » yong kwek, yong kim, yong ben
yang jin » yang jie, yang jun, ying jin
kang han » kang chen, kong hang, dang hai
yan tan » yan clan, yan guan, yan wang
tan tan » tas tan, tin tan, tang tang

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 yong kee ((yan tan) OR (tan tan)) yang jin ((kang han) OR (zhang han)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong kee ((yan tan) or (tan tan)) yang jin ((kang han) OR (zhang han)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong kee ((yan tan) or (tan tan)) yang jin ((kang han) OR (zhang han)) ;*.