Perhaps you should try some spelling variations:
integration schemes » integration schengen, irrigation schemes, integration regimes
graen information » green information, gain information, screen information
der integration » zur integration, sector integration
support graen » support grant, support greater, support group
support der » support de, support under, support deep

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( support der integration schemes. ) OR ( support graen information theory. ))~.
• Adding a wildcard symbol may retrieve word variants: (( support der integration schemes. ) or ( support graen information theory. ))*.