Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
yang minh » yang mind, kang minah, anh minh
sang minh » kang minah, anh minh, song min
congo shu » cong shu
hua rene » hua ren, juan rene
yang ka » yang fan, yang yao
ka hua » ya hua, ka chuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong yang ka hua rene ((yang minh) or (sang minh)) congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang ka hua rene ((yang minh) OR (sang minh)) congo shu ;.
• Adding a wildcard symbol may retrieve word variants: dong yang ka hua rene ((yang minh) or (sang minh)) congo shu ;*.