Perhaps you should try some spelling variations:
integration theory » integration through, information theory, innovation theory
integration model » integration models, integrative model, interaction model
grant integration » migrant integration, migrants integration, statt integration
der integration » zur integration, sector integration
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 model. ) OR ( support grant integration theory. ))~.
• Adding a wildcard symbol may retrieve word variants: (( support der integration model. ) or ( support grant integration theory. ))*.