Perhaps you should try some spelling variations:
dang binh » dann bin, dong bin, dang anh
chen ryan » cohen ryan, chen siyan, chen yang
ryan john » brian john, tian john
binh tan » binh tran, binh thanh, binh thang
hua chen » jui chen, yu chen, a chen
tan hua » tuan hua, wang hua, tan chia
von sam » von sa, von sap, von scham

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

• Performing a fuzzy search may retrieve terms with similar spellings: dang binh tan hua chen ryan john ((von sam) or (kong (sar or sara))) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dang binh tan hua chen ryan john ((von sam) OR (kong (sar OR sara))) ;*.