Perhaps you should try some spelling variations:
head grains » wheat grains, feed grains
yang liang » wang liang, yan liang, yang yang
shang kai » shang hai
wenn das » wenn die
ying jin » yang jin, jing ji, yang jie
yang xi » yang di, yang yi, yang jui
a head » _ head
das a » das _, has a, gas a

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: wenn das a head grains ((yang liang) OR (((ying jin) OR (yang xi)))) shang kai ;~.
• Adding a wildcard symbol may retrieve word variants: wenn das a head grains ((yang liang) or (((ying jin) or (yang xi)))) shang kai ;*.