Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
crowd international » crop international, growth international, 3rd international
irrigation schemes » irrigation scheme, irrigation systems
cost irrigation » crop irrigation, cost mitigation, et irrigation
supply crowd » supply growth, supply from
supply cost » supply costs

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

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