Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
cheng chan » cheung chan, cheng han, cheng zhang
chan kang » chung kang, chan eng, chan fong
kang dong » kang young, jeng dong
wing ian » twinn ian, wing sun
wing tan » liang tan, hong tan, wing sun
yan yuan » yan guan, fang yuan, nan yan
tin tan » tan tan, tin can
sin » sign, sind, skin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wing ian) or (((wing tan) OR (tin tan))))) or (dong di)) yan yuan cheng chan kang dong sin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wing ian) OR (((wing tan) OR (tin tan))))) OR (dong di)) yan yuan cheng chan kang dong sin ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wing ian) or (((wing tan) OR (tin tan))))) or (dong di)) yan yuan cheng chan kang dong sin ;*".