Perhaps you should try some spelling variations:
boon chong » boon siong, joon chang
yang yaog » yang yang, wang yang, gang yao
dann bin » dong bin
yang yao » yang yang, wang yan, yang yi
yan boon » a boon, ar boon
chong ha » chang ha, chong nam, chong wan
dong di » dong sin

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: ((((dann bin) OR (dong xiao))) OR (dong di)) du ((yang yaog) OR (yang yao)) yan boon chong ha ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dann bin) or (dong xiao))) or (dong di)) du ((yang yaog) OR (yang yao)) yan boon chong ha ;~".
• Adding a wildcard symbol may retrieve word variants: ((((dann bin) or (dong xiao))) or (dong di)) du ((yang yaog) OR (yang yao)) yan boon chong ha ;*.