Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
juan rene » juan meng, juan rana
duong van » duong anh
lang yan » wang yan, wang yang, zhang yan
yan minh » tuan minh, yang mind, yuan ming
cong van » congo can, cong sun
y juan » _ juan, v juan
yan y » yang y, yan _, yan 4

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan y juan rene ((yan minh) or (sang minh)) ((cong van) OR (duong van)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan y juan rene ((yan minh) OR (sang minh)) ((cong van) OR (duong van)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan y juan rene ((yan minh) or (sang minh)) ((cong van) OR (duong van)) ;*".