Perhaps you should try some spelling variations:
chen yang » chen rong
john wong » john song, john bonn
dang anh » duong anh
tran hua » tan hua, tran duc
tuan hua » tan hua, tuan vu, yuan hui
ren yang » dan yang, pei yang, ren weng
wong sam » wong sau, wong lai, kong sar

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

• Performing a fuzzy search may retrieve terms with similar spellings: dang anh ((tran hua) OR (tuan hua)) ((((ren yang) or (chen yang))) or (ren yan)) john wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dang anh ((tran hua) OR (tuan hua)) ((((ren yang) OR (chen yang))) OR (ren yan)) john wong sam ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dang anh ((tran hua) OR (tuan hua)) ((((ren yang) or (chen yang))) or (ren yan)) john wong sam ;".
• Adding a wildcard symbol may retrieve word variants: dang anh ((tran hua) OR (tuan hua)) ((((ren yang) or (chen yang))) or (ren yan)) john wong sam ;*.