Perhaps you should try some spelling variations:
chang john » change john, changed john, chang soon
john wong » john song, john bonn
wang yao » wang yan, yang yao, gang yao
yao yang » yang yang
jia shen » jian she
wong siu » wong shiu, kong siu, wong sau
yi shen » yi chen, pui shen, wei shen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yao yang ((jia shen) OR (yi shen)) chang john wong siu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yao yang ((jia shen) OR (yi shen)) chang john wong siu ;".
• Adding a wildcard symbol may retrieve word variants: wang yao yang ((jia shen) OR (yi shen)) chang john wong siu ;*.