Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
kang chung » kung chung, kang young, dang hung
chung chee » chung hee, chang chen, chung chi
yang ying » yang yang, yang jing, huang ying
ying yang » yang yang, yin yang, ying chang
yulu chen » yu chen
chan kang » chung kang, chan eng, chan fong

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang ying yang ((yulu chen) or (yuan cheng)) chan kang chung chee ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ying yang ((yulu chen) OR (yuan cheng)) chan kang chung chee ;*.