Perhaps you should try some spelling variations:
wang planning » range planning, land planning, kong planning
planning can » planning chain, planning case, planning land
china grain » china gain, china main, china plain
chia going » china going
lin shang » bin zhang, jin chang, xia shang
shang hai » shang kai, dang hai, chang ha
yang lin » yang jin, wang lin, yang li

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 planning can ((china grain) OR (chia going)) yang lin shang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang planning can ((china grain) or (chia going)) yang lin shang hai ;*.