Perhaps you should try some spelling variations:
wing planning » kong planning, mining planning, land planning
planning can » planning chain, planning case, planning land
line plot » linear plot, land plot, line flow
line pll » line call, line plus, line fcl
wong yue » wang yue, hong yu
can oil » can soils, can only, corn oil
hong » long

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: wing planning can oil boom ((line pll) OR (line plot)) ((hong tan) OR (wong yue)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing planning can oil boom ((line pll) OR (line plot)) ((hong tan) or (wong yue)) ;~".
• Adding a wildcard symbol may retrieve word variants: wing planning can oil boom ((line pll) OR (line plot)) ((hong tan) or (wong yue)) ;*.