Perhaps you should try some spelling variations:
john wong » john song, john bonn
duong anh » duong van, trong anh
ren yang » ren yan, chen yang, pei yang
dan yang » daun yang, tan yang, wang yang
wong sar » kong sar, wong sam, wong sau
tuan hua » tuan vu, yuan hui
tan hua » wang hua, tan chia, tan puay

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) OR (duong anh)) ((tuan hua) or (tan hua)) ((ren yang) or (dan yang)) john wong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dang anh) OR (duong anh)) ((tuan hua) OR (tan hua)) ((ren yang) OR (dan yang)) john wong sar ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dang anh) OR (duong anh)) ((tuan hua) or (tan hua)) ((ren yang) or (dan yang)) john wong sar ;*".