Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
john song » john wong, john bonn, john ngosong
minh tong » minh cong, dinh tung, min hong
tong shui » tong hui, cong shu, gong hui
yang lin » yang jin, wang lin, yang li
li song » li cong, li rong, kim song

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 lin ((li song) OR (john song)) minh tong shui ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang yang lin ((li song) or (john song)) minh tong shui ;*.