Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
john song » john bonn, john ngosong
john wong » john bonn
minh gong » minh cong, min hong, ming kong
gong hui » tong hui, tong shui, wang hui
yang li » yang lin, yang di, yang xi
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 li ((li song) OR (((john song) OR (john wong)))) minh gong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang li ((li song) or (((john song) OR (john wong)))) minh gong hui ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang yang li ((li song) or (((john song) OR (john wong)))) minh gong hui ;*.