Perhaps you should try some spelling variations:
irrigation scheme » irrigation systems
price integration » service integration, policy integration, trade integration
integration power » integration some, integration process, international power
how irrigation » crop irrigation, from irrigation, high irrigation
export price » export prices, import prices
supply how » supply shock

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

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