Perhaps you should try some spelling variations:
yong juan » yong susan, don juan, feng juan
juan rene » juan meng, juan rana
sang minh » kang minah, anh minh, song min
yan yong » yan cong, tan yong, wang yong
tang min » chang min, yang mind, tang li
wong yue » hong yu
wang yue » wang hua, wang he, wang hui

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

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