Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
integration some » integration south, integration soziale, integration social
fare integration » trade integration, die integration
supply scale » supply case, supply scheme, supply social
supply fare » supply farm, supply case, supply figure

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