Perhaps you should try some spelling variations:
young john » kong john, wong john, young jean
wang oanh » wang yan, wang yang, dang anh
oanh tran » anh tran, anh tuan, binh tran
tran hua » tan hua, tuan hua, tran duc
hua chen » jui chen, yu chen, a chen
yang jie » yang jin, yang di, yang jui
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: wang oanh tran hua chen ((young john) or (yang jie)) wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang oanh tran hua chen ((young john) OR (yang jie)) wong sam ;.
• Adding a wildcard symbol may retrieve word variants: wang oanh tran hua chen ((young john) or (yang jie)) wong sam ;*.