Perhaps you should try some spelling variations:
changed face » changed file, changing face, changed since
when changed » when change, been changed, we changed
ying chang » jin chang, yi chang, yin hang
quo when » do when, so when, quo been
wong siu » wong shiu, kong siu, wong sau
yi gang » ii gang, i gang, li gang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((ying chang) OR (yi gang)) quo when changed face ((wang zhi) OR (wong siu)) ;~".
• Adding a wildcard symbol may retrieve word variants: yang ((ying chang) OR (yi gang)) quo when changed face ((wang zhi) OR (wong siu)) ;*.