Perhaps you should try some spelling variations:
lang yan » wang yan, wang yang, zhang yan
ren sang » lee sang, le sang, ren weng
sang min » sang minh, song min, tang min
wong sau » wong sam, wong siu, wong shiu
yan yaa » yang yao, nana yaa, yan yuan
yaa hua » ya hua
hua ren » hua chen
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan yaa hua ren sang min ((wong sau) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan yaa hua ren sang min ((wong sau) OR (hong yu)) ;.
• Adding a wildcard symbol may retrieve word variants: lang yan yaa hua ren sang min ((wong sau) or (hong yu)) ;*.