Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yong
chan kang » chung kang, chan eng, chan fong
kang chen » chang chen, jane chen, tang chun
yan chan » yan clan, yuan chang, han chang
yong jui » yang jui, yang jun, yong suk
yong cai » dong cao, yong c, yong wah
kang han » kong hang, zhang han, dang hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang yan chan kang ((yong jui) or (yong cai)) ((kang han) OR (kang chen)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yan chan kang ((yong jui) OR (yong cai)) ((kang han) OR (kang chen)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang yan chan kang ((yong jui) or (yong cai)) ((kang han) OR (kang chen)) ;*".