Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
balkan integration » asian integration, asean integration, urban integration
integration south » integration study, integration some, integration social
fare irrigation » farm irrigation, large irrigation, scale irrigation
supply fare » supply farm, supply case, supply figure

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

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