Perhaps you should try some spelling variations:
changed rome » changed from, change some, changed times
change john » changed john, chasse john, change japan
yang java » yang maha
java when » data when
yan yang » yang yang, yao yang, dan yang
wong siu » wong shiu, kong siu, wong sau
wang » wing, wan, lang

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: wang yan yang java when ((change john) OR (changed rome)) wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan yang java when ((change john) or (changed rome)) wong siu ;*.