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 nan » china non, china nancy, china nolan
kong john » king john, wong john, longo john
nan kong » tan kong
wong sau » wong sam, wong siu, wong shiu

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 nan kong john ((wong sau) OR (cong shu)) ;~.
• Adding a wildcard symbol may retrieve word variants: doing line file china nan kong john ((wong sau) or (cong shu)) ;*.