Perhaps you should try some spelling variations:
integration schemes » integration schengen, irrigation schemes, integration regimes
facto integration » factor integration, faculty integration, sector integration
side irrigation » saline irrigation, scale irrigation, under irrigation
supply facto » supply factors, supply sector, supply data
systems. » system.

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 facto integration schemes. ) OR ( supply side irrigation systems. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply facto integration schemes. ) or ( supply side irrigation systems. ))*.