Perhaps you should try some spelling variations:
changed file » change five, change fire, changed face
when changed » when change, been changed, we changed
ying chang » jin chang, yi chang, yin hang
tong shui » tong hui, cong shu, gong hui
wong siu » wong shiu, kong siu, wong sau
yi gang » ii gang, i gang, li gang
so when » do when

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: yang ((ying chang) OR (yi gang)) so when changed file ((tong shui) OR (wong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: yang ((ying chang) or (yi gang)) so when changed file ((tong shui) or (wong siu)) ;*.