Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
sang minh » kang minah, anh minh, song min
liang tan » liang dan, liang sun
lee sang » lee ann
wing tan » wing ian, hong tan, tin tan
hui lee » zhuo lee
long du » long d, long do, long run
di hui » li hui, yi hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang di hui lee sang minh ((long du) or (((wing tan) OR (liang tan)))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang di hui lee sang minh ((long du) OR (((wing tan) OR (liang tan)))) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang yang di hui lee sang minh ((long du) or (((wing tan) OR (liang tan)))) ;*".