Perhaps you should try some spelling variations:
done hoang » dong hoang
sang minh » kang minah, anh minh, song min
chang min » zhang ming, chang mae, chan ming
zhang zhi » zhong zhi, wang zhi, zhang wei
yang min » yang mind, yang jin, tang min
hong ghi » zhong zhi, hong g, hong hai
ha main » a main, haul main, das main

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

• Performing a fuzzy search may retrieve terms with similar spellings: done hoang vu ha main ((((yang min) or (sang minh))) or (chang min)) ((hong ghi) or (zhang zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: done hoang vu ha main ((((yang min) OR (sang minh))) OR (chang min)) ((hong ghi) OR (zhang zhi)) ;.
• Adding a wildcard symbol may retrieve word variants: done hoang vu ha main ((((yang min) or (sang minh))) or (chang min)) ((hong ghi) or (zhang zhi)) ;*.