Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan
yang liang » wang liang, yan liang, yang yang
gene hong » eng hong, gene one
tan long » tan hong, tan kong, tan yong
long sam » wong sam, long span, long arm
yan 11 » can 11
man 11 » can 11, man 21

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