Perhaps you should try some spelling variations:
integration soziale » integration social
costs integration » comes integration, post integration, focus integration
irrigation scheme » irrigation systems
canal irrigation » scale irrigation
supply canal » supply canada, supply annual, supply china

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

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