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

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) OR (supply farm)) integration some. ) OR ( supply scale irrigation schemes. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((supply fare) OR (supply farm)) integration some. ) or ( supply scale irrigation schemes. ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((supply fare) OR (supply farm)) integration some. ) or ( supply scale irrigation schemes. ))*.