Perhaps you should try some spelling variations:
changed john » change john, changed our, changed post
chasse john » change john, class john, chassama john
yang java » yang maha
java when » data when
lang yan » wang yan, wang yang, zhang yan
yan yang » yang yang, yao yang, dan yang
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: lang yan yang java when ((chasse john) OR (changed john)) wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan yang java when ((chasse john) or (changed john)) wong siu ;*.