Perhaps you should try some spelling variations:
wang xiuyan » wang xinyan, wang xuan
china zhang » china chang, cheng zhang, china han
wang yuhan » wang luhang, wang yan, wang yidan
chin chang » china chang, chain change, colin chang
wong siu » wong shiu, kong siu, wong sau
ha wong » ha huong, ho kwong
yang 3 » yang _, yang 8, gang 3

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 yuhan) OR (wang xiuyan)) yang 3 ((china zhang) OR (chin chang)) ha wong siu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yuhan) or (wang xiuyan)) yang 3 ((china zhang) OR (chin chang)) ha wong siu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yuhan) or (wang xiuyan)) yang 3 ((china zhang) OR (chin chang)) ha wong siu ;*.