Perhaps you should try some spelling variations:
integration theory » integration through, information theory, innovation theory
crowd integration » grid integration, rfid integration, beyond integration
irrigation scheme » irrigation systems
field irrigation » fed irrigation, led irrigation, flood irrigation
supply crowd » supply growth, supply cost, supply from
supply field » supply cold, supply food

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply crowd integration theory. ) or ( supply field irrigation scheme. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply crowd integration theory. ) OR ( supply field irrigation scheme. )).
• Adding a wildcard symbol may retrieve word variants: (( supply crowd integration theory. ) or ( supply field irrigation scheme. ))*.