Perhaps you should try some spelling variations:
change john » changed john, chasse john, change japan
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
wong siu » wong shiu, wong sau, wong siew
kong siu » kong eiu, dong sin, kong sar
yang 1 » yang _, yang 8, yang 4
1 when » 19 when, 3 when, 4 when

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang 1 when change john ((wong siu) or (kong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang 1 when change john ((wong siu) OR (kong siu)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yang yang 1 when change john ((wong siu) or (kong siu)) ;*.