Perhaps you should try some spelling variations:
young john » kong john, wong john, young jean
chen young » chen yong, chen yang, chen chung
wang oanh » wang yan, wang yang, dang anh
tran hua » tan hua, tuan hua, tran duc
tan chia » tuan china, than china, can china
bonn sam » bonn am, bonn zum, bonn a

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang oanh ((tran hua) or (((tan chia) or (wang hua)))) chen young john bonn sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang oanh ((tran hua) OR (((tan chia) OR (wang hua)))) chen young john bonn sam ;.
• Adding a wildcard symbol may retrieve word variants: wang oanh ((tran hua) or (((tan chia) or (wang hua)))) chen young john bonn sam ;*.