Perhaps you should try some spelling variations:
changes made » changes a, changes due
wang xiuyan » wang xinyan
wang xuan » wang xueman, wang yuhan, wang hua
chang mae » chang ha
13 china » 3 china, 1 china, 15 china
wong siu » wong shiu, kong siu, wong sau
yang 13 » yang 4.3, zwang 13

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 xuan) OR (wang xiuyan)) yang 13 china ((chang mae) OR (changes made)) wong siu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang xuan) or (wang xiuyan)) yang 13 china ((chang mae) OR (changes made)) wong siu ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang xuan) or (wang xiuyan)) yang 13 china ((chang mae) OR (changes made)) wong siu ;*.