Perhaps you should try some spelling variations:
liang yang » liang ying, wang yang, yang yang
zhang ying » zhang ming, zhang jing, zhang ping
sang minh » kang minah, anh minh, song min
tong shui » cong shu, gong hui
tong hui » wang hui
le sang » lee sang, le dang
li le » i le, ii le, li ke

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