Perhaps you should try some spelling variations:
integration schemes » integration schengen, integration regimes, integration some
irrigation schemes » irrigation scheme, irrigation systems
factor integration » facto integration, sector integration, actor interaction
deep irrigation » drip irrigation, delta irrigation, level irrigation
supply factor » supply factors, supply sector
support deep » supported deep, support de, support does

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

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