Perhaps you should try some spelling variations:
development foreign » development sovereign, development forest, development forests
industry developing » industries developing, industry development
developing coherent » developing government, developing forest, developing placement
coherent period » coherent pension, government period, deferment period
foreign period » foreign price, foreign operation, formation period

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: (( industrial development foreign period ) OR ( industry developing coherent period ))~.
• Adding a wildcard symbol may retrieve word variants: (( industrial development foreign period ) or ( industry developing coherent period ))*.