Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
can child » care child, can build, can china
chen wang » chen rong, chen ping
chen yang » chen rong
longer do » longer _, longer a, long do
3 longer » _ longer, 2 longer, 3 langer

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 yang) OR (yang guang)) can child ((chen wang) OR (chen yang)) 3 longer do ;~.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (yang guang)) can child ((chen wang) or (chen yang)) 3 longer do ;*.