Perhaps you should try some spelling variations:
dunning john » gunning jan
longo john » kong john
wang yong » wang yang, wang hyoung, wang yan
yong wang » hong wang, yong phang, ping wang
wong john » wrong john, kong john, young john
wong siu » wong shiu, kong siu, wong sau
wang li » wang lei, wang lin, tang li
li als » ki als

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 yong wang li als ((dunning john) OR (((wong john) OR (longo john)))) wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yong wang li als ((dunning john) or (((wong john) or (longo john)))) wong siu ;*.