Perhaps you should try some spelling variations:
integration social » international social
irrigation scheme » irrigation systems
canal irrigation » scale irrigation
de integration » die integration, re integration, une integration
supply canal » supply canada, supply annual, supply china
support de » support _, support a, support 4

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

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