Perhaps you should try some spelling variations:
doing line » doing list, doing time, going live
file china » role china, size china, profile china
line file » file file, line fcl
china ren » china loren, china real, china reza
kong john » king john, wong john, longo john
ren kong » tan kong, nan kong, ren weng
wong siu » wong shiu, kong siu, wong sau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doing line file china ren kong john ((wong siu) OR (cong shu)) ;~.
• Adding a wildcard symbol may retrieve word variants: doing line file china ren kong john ((wong siu) or (cong shu)) ;*.