Perhaps you should try some spelling variations:
liang ying » liang liying, huang ying, zhang ying
yang yang » wang yang, wang yan
song minh » sang minh, song min, song ming
minh tong » minh cong, dinh tung, min hong
tong hui » wang hui
lu song » li song, kyu song, yun song
li lu » li ju, li l, li li

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