Perhaps you should try some spelling variations:
irrigation system » irrigation systems, irrigation water, irrigation scheme
price integration » service integration, trade integration, price indexation
integration power » integrative power, integration process, international power
crowd irrigation » crop irrigation, flood irrigation, from irrigation
supply crowd » supply growth, supply cost, supply from
export price » export prices, import prices

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

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