Perhaps you should try some spelling variations:
oanh tran » anh tran, binh tran
kong john » king john, wong john, longo john
john kong » john king, john song, john wong
anh tuan » anh tran, dinh tuan
ren kong » tan kong, nan kong, ren weng
hua ren » hua chen
wang » wing, lang
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: (wang or wan) ((anh tuan) OR (oanh tran)) hua ren kong john kong sar ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wan) ((anh tuan) OR (oanh tran)) hua ren kong john kong sar ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) ((anh tuan) OR (oanh tran)) hua ren kong john kong sar ;".
• Adding a wildcard symbol may retrieve word variants: (wang or wan) ((anh tuan) OR (oanh tran)) hua ren kong john kong sar ;*.