Perhaps you should try some spelling variations:
duong anh » dang anh, duong van, trong anh
wang yang » wang yan, wang liang, wang yanling
john song » john wong, john bonn, john ngosong
wang anh » dang anh, wang yan, wang all
tuan hua » tan hua, tuan vu, yuan hui
ren yang » chen yang, dan yang, pei yang
song pae » song ze

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wang anh) or (duong anh))) or (wang yang)) tuan hua ((ren yang) or (ren yan)) john song pae ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wang anh) OR (duong anh))) OR (wang yang)) tuan hua ((ren yang) OR (ren yan)) john song pae ;.
• Adding a wildcard symbol may retrieve word variants: ((((wang anh) or (duong anh))) or (wang yang)) tuan hua ((ren yang) or (ren yan)) john song pae ;*.