Perhaps you should try some spelling variations:
chen young » chen yong, chen yang, chen chung
young john » kong john, wong john, young jean
john song » john wong, john bonn, john ngosong
dang anh » duong anh
tuan hua » tan hua, tuan vu, yuan hui
hua chen » jui chen, yu chen, a chen
song sam » wong sam, kong sar, song pae
wang » wing, wan, lang

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) or (dang anh)) tuan hua chen young john song sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yan) OR (dang anh)) tuan hua chen young john song sam ;*.