Perhaps you should try some spelling variations:
chen jian » chen siyan
jian john » tian john, brian john, japan john
dong bin » dong sin, dong di, dann bin
bin tran » binh tran, tien tran, bin mean
tran hua » tan hua, tuan hua, tran duc
hua chen » jui chen, yu chen, a chen
wong sam » wong sau, wong lai, von sam
sar » sara, star, saur

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong bin tran hua chen jian john ((wong sam) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong bin tran hua chen jian john ((wong sam) OR (kong sar)) ;*.