Perhaps you should try some spelling variations:
wang danning » wang daoping, wang yangming, wang ning
hear grains » wheat grains
grains dans » mains dans, agraire dans, granges dans
can hear » can gear, can learn, can help
dans tin » dans un, dans son, dans mon
hong hai » shang hai, zhong tai, hong tan

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: ((wang danning) OR (wang yanling)) can hear grains dans tin ((hong hai) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang danning) or (wang yanling)) can hear grains dans tin ((hong hai) OR (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang danning) or (wang yanling)) can hear grains dans tin ((hong hai) OR (dang hai)) ;*.