Perhaps you should try some spelling variations:
hyoung tuan » hyoung gun
wan hyoung » wang hyoung, man houng, min hyoung
sang minh » kang minah, anh minh, song min
kong sara » kong sar
tuan hua » tan hua, tuan vu, yuan hui
hua chen » jui chen, yu chen, a chen
yang lin » yang jin, wang lin, yang liang
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: wan hyoung tuan hua chen ((sang minh) OR (((yang li) OR (yang lin)))) kong sara ;~.
• Adding a wildcard symbol may retrieve word variants: wan hyoung tuan hua chen ((sang minh) or (((yang li) or (yang lin)))) kong sara ;*.