Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
sang minh » kang minah, anh minh, tang min
song ming » song bing, gong min, jong min
yang lin » yang jin, wang lin, yang liang
song min » gong min, jong min, song jin
wong sam » wong sau, wong lai, kong sar
yang li » yang di, yang xi, yang yi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong ((yang lin) OR (yang li)) ju ((((sang minh) OR (song ming))) OR (song min)) wong sam ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong ((yang lin) or (yang li)) ju ((((sang minh) OR (song ming))) or (song min)) wong sam ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong ((yang lin) or (yang li)) ju ((((sang minh) OR (song ming))) or (song min)) wong sam ;*.