Perhaps you should try some spelling variations:
liang ying » liang liying, huang ying, zhang ying
yang yang » wang yang
sang minh » kang minah, anh minh, song min
minh tong » minh cong, dinh tung, min hong
tong hui » wang hui
li sang » le sang, li gang, li san
xi li » li li, xi ai

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 ((liang ying) OR (((yang yang) OR (wang yan)))) xi li sang minh tong hui ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((liang ying) or (((yang yang) or (wang yan)))) xi li sang minh tong hui ;*.