Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
integration theories » integration theorems, integrationstheorie 2, integration theory
chain international » chains international, main international, can international
crowd integration » grid integration, rfid integration, beyond integration
supply crowd » supply growth, supply cost, supply from

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply crowd integration theories. ) OR ( supply chain international efforts. ))~".
• Adding a wildcard symbol may retrieve word variants: (( supply crowd integration theories. ) OR ( supply chain international efforts. ))*.