Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
irrigation schemes » irrigation scheme, irrigation systems
tool integration » global integration, social integration, trade integration
crop irrigation » drip irrigation, scale irrigation, canal irrigation
supply tool » supply school, support tool
supply crop » supply crowd, supply curve

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

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