Perhaps you should try some spelling variations:
juan meng » juan rene, jui meng, yuan ming
sang minh » kang minah, anh minh, song min
yan feng » yan cong, tai feng, yan fei
tang min » chang min, yang mind, tang li
wong yue » hong yu
wang yue » wang hua, wang hui, wang ke
wang he » wang hua, wang zhi, wang wei

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 yan feng juan meng ((tang min) OR (sang minh)) ((wong yue) OR (((wang yue) OR (wang he)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan feng juan meng ((tang min) or (sang minh)) ((wong yue) or (((wang yue) OR (wang he)))) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan feng juan meng ((tang min) or (sang minh)) ((wong yue) or (((wang yue) OR (wang he)))) ;*.