Perhaps you should try some spelling variations:
yang yan » yang yang, wang yan, yang yao
yang fan » zhang fan, yang dean, yang yang
chan eng » chan fong, chan kang, chan ming
eng yong » eng hong, wang yong, peng yeng
yong cai » dong cao, yong c, yong wah
eang hay » dang hai
kang han » kang chen, kong hang, zhang han

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 ((yang yan) OR (yang fan)) chan eng yong cai ((eang hay) OR (kang han)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang yan) or (yang fan)) chan eng yong cai ((eang hay) or (kang han)) ;*.