Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
irrigation system » irrigation systems, irrigation water, irrigation scheme
comes integration » res integration, focus integration, domestic integration
crop irrigation » drip irrigation, scale irrigation, canal irrigation
supply comes » supply costs, supply cote, supply schemes
supply crop » supply crowd, supply from, supply europe

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

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