Perhaps you should try some spelling variations:
wang wang » wang liang, wang yan, wang yong
wang yang » wang yan, wang liang, wang yanling
sang minh » kang minah, anh minh, song min
lai sang » lee sang, lai lan, le sang
tong hui » wang hui
yang yi » yang di, yang xi, yang jui
yi lai » yi dai
cong » congo, long, hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang yang yi lai sang minh ((cong shu) or (tong hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yang yi lai sang minh ((cong shu) OR (tong hui)) ;*.