Perhaps you should try some spelling variations:
price integration » service integration, trade integration, price indexation
curve irrigation » surge irrigation, large irrigation, crop irrigation
integration some » integration south, integration soziale, integration social
export price » export prices, import prices
systems. » system.

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

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