Perhaps you should try some spelling variations:
irrigation scheme » irrigation systems
integration some » integration south, integration soziale, integration social
chain irrigation » grain irrigation, change irrigation, basin irrigation
et integration » et l'integration, test integration, text integration
supply et » supply _, supply a, supply 3

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

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