Perhaps you should try some spelling variations:
hong thang » hoong chang, hong hong, hong tan
yang guang » yang yang, yan guan, yang liang
thang long » change long
gene hong » eng hong, gene one
long sam » wong sam, long span, long arm
can 11 » man 11
man 21 » man 11, man 20.1

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: yang guang ((can 11) OR (man 21)) gene hong thang long sam ;~.
• Adding a wildcard symbol may retrieve word variants: yang guang ((can 11) or (man 21)) gene hong thang long sam ;*.