Perhaps you should try some spelling variations:
yulu chen » yu chen
chan tung » chan eng, chan fong, chan kang
china how » china hong
qian yan » qian jun, qian yi
yu cheng » yu chen, _ cheng
chun hui » chuang hui, china hui, chun h
nan yan » nan ya, wang yan, dan yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing ((nan yan) OR (qian yan)) ((yulu chen) or (yu cheng)) chan tung ((china how) or (chun hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing ((nan yan) OR (qian yan)) ((yulu chen) OR (yu cheng)) chan tung ((china how) OR (chun hui)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing ((nan yan) OR (qian yan)) ((yulu chen) or (yu cheng)) chan tung ((china how) or (chun hui)) ;*".