Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
chen chan » chen chuan, cheung chan, chen chung
know your » grow your
chan how » chain how, change how, chains how
how know » now known, you know, do know
li chen » yi chen, jui chen

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: wan ((wang yuhan) OR (((yang guang) OR (yang yang)))) li chen chan how know your ;~.
• Adding a wildcard symbol may retrieve word variants: wan ((wang yuhan) or (((yang guang) or (yang yang)))) li chen chan how know your ;*.