Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
chang kang » chan kang, chung kang, chang ann
wang wang » wang yang, wang liang, wang yan
wang yuan » wang yuhan, wang yan, fang yuan
yang jun » yang jui, pang jun, yang jin
yong cai » dong cao, yong c, yong wah
eang hay » dang hai, kang han

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 yuan chang kang ((yang jun) or (yong cai)) eang hay ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yuan chang kang ((yang jun) OR (yong cai)) eang hay ;*.