Perhaps you should try some spelling variations:
when chasse » when change, when chance
chasse john » change john, class john, chassama john
yan yang » yang yang, dan yang, tan yang
yao yang » yang yang
wong siu » wong shiu, wong sau, wong siew
kong siu » kong eiu, dong sin, kong sar
a when » 3 when, 4 when, 1 when
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yan yang) OR (yao yang)) a when chasse john ((wong siu) or (kong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yan yang) OR (yao yang)) a when chasse john ((wong siu) OR (kong siu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) OR (yao yang)) a when chasse john ((wong siu) or (kong siu)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) OR (yao yang)) a when chasse john ((wong siu) or (kong siu)) ;*.