Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yan liang » yang liang, wang liang, you liang
can child » care child, can china, cbt child
der klang » der klange, den klang, des klangs
3 longer » _ longer, 2 longer, 3 langer
longer a » longer _
klang 3 » klang 31, klang _, lang 3

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: ((yan liang) OR (yang guang)) ((can child) OR (can build)) der klang 3 longer a ;~.
• Adding a wildcard symbol may retrieve word variants: ((yan liang) or (yang guang)) ((can child) or (can build)) der klang 3 longer a ;*.