Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong ying » yirong ying, dong yang, fong yin
yang vinh » sang minh, yang jing, yang lin
song thin » song shin, song jin, song min
hua chen » jui chen, yu chen, hua ren
yang jin » yang jie, yang jun, ying jin
long shu » cong shu, tong shui, long du
a chen » ta chen, _ chen, n chen

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong ying ((hua chen) OR (a chen)) ((yang vinh) or (yang jin)) ((long shu) or (song thin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong ying ((hua chen) OR (a chen)) ((yang vinh) OR (yang jin)) ((long shu) OR (song thin)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong ying ((hua chen) OR (a chen)) ((yang vinh) or (yang jin)) ((long shu) or (song thin)) ;*".