Perhaps you should try some spelling variations:
state david » states david, statt david, stanley david
david only » david coulby, david loundy
only child » only children
des state » des staates, des staats, des status
yang yang » wang yang, wang yan
yan yang » dan yang, tan yang, yan wang
iii des » iii der, iii das, iii de

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 ((((yan yang) OR (yang yang))) OR (yao yang)) iii des state david only child ;~.
• Adding a wildcard symbol may retrieve word variants: wan ((((yan yang) or (yang yang))) or (yao yang)) iii des state david only child ;*.