Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
factor integration » facto integration, sector integration, actor interaction
crowd irrigation » crop irrigation, flood irrigation, from irrigation
integration some » integration south, integration soziale, integration social
supply factor » supply factors, supply sector
supply crowd » supply growth, supply cost, supply from

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: (( supply crowd irrigation schemes. ) OR ( supply factor integration some. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply crowd irrigation schemes. ) or ( supply factor integration some. ))*.