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 shui » tong hui, cong shu, gong hui
xi li » xi ai
li li » li lin, li l, li lu

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) OR (li li)) sang minh tong shui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang ying) or (((yang yang) or (wang yan)))) ((xi li) OR (li li)) sang minh tong shui ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang ying) or (((yang yang) or (wang yan)))) ((xi li) OR (li li)) sang minh tong shui ;*.