Perhaps you should try some spelling variations:
yong yang » dong yang, ying yang, kyoung yang
yang yang » wang yang, wang yan
wong shiu » wong siu, cong shu, song shin
gang min » tang min, chang min, sang minh
gong min » jong min, song min, gong meng
von sap » von sa, von sam, von sach
xi liu » x liu, xu liu

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 ((yong yang) OR (yang yang)) xi liu ((gang min) OR (gong min)) ((wong shiu) OR (von sap)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yang) OR (yang yang)) xi liu ((gang min) or (gong min)) ((wong shiu) or (von sap)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yong yang) OR (yang yang)) xi liu ((gang min) or (gong min)) ((wong shiu) or (von sap)) ;*.