Perhaps you should try some spelling variations:
jane chen » jean chen, jie chen
kang chen » chang chen, kang han, tang chun
yong minh » gong min, jong min, sang minh
minh song » minh cong, jin song, min hong
qian war » qian wang, qian yan, than war
wang » wan
shin » skin, sein, thin

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 OR wing) OR lang) qian war ((jane chen) OR (kang chen)) yong minh song shin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang or wing) or lang) qian war ((jane chen) OR (kang chen)) yong minh song shin ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang or wing) or lang) qian war ((jane chen) OR (kang chen)) yong minh song shin ;*.