Perhaps you should try some spelling variations:
john ngosong » john song
tan china » tuan china, than china, can china
china ren » china loren, china real, china reza
john wong » john song, john bonn
long sin » dong sin, long span, long run
ren ying » ran ying, jin ying, en yin
sin tan » sin tax, tin tan, sin cain

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

• Performing a fuzzy search may retrieve terms with similar spellings: long sin tan china ren ying ((john ngosong) or (john wong)) sein ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: long sin tan china ren ying ((john ngosong) OR (john wong)) sein ;.
• Adding a wildcard symbol may retrieve word variants: long sin tan china ren ying ((john ngosong) or (john wong)) sein ;*.