Perhaps you should try some spelling variations:
chan minh » chan ming, chi minh, tuan minh
chen chan » chen chuan, cheung chan, chen chung
yan clan » das clan, yan guan, yan yuan
hua chen » jui chen, yu chen, a chen
cong seo » cong shu, cong sun, von seo
yan tan » tan tan, yan guan, yan wang
hong » long

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan or wing) or lang) ((yan tan) or (yan clan)) hua chen chan minh ((cong seo) OR (hong seo)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan OR wing) OR lang) ((yan tan) OR (yan clan)) hua chen chan minh ((cong seo) OR (hong seo)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan or wing) or lang) ((yan tan) or (yan clan)) hua chen chan minh ((cong seo) OR (hong seo)) ;".
• Adding a wildcard symbol may retrieve word variants: ((wan or wing) or lang) ((yan tan) or (yan clan)) hua chen chan minh ((cong seo) OR (hong seo)) ;*.