Perhaps you should try some spelling variations:
integration model » integration models, integrative model, interaction model
innovation theory » innovation through, motivation theory
der integration » zur integration, sector integration
eat innovation » et innovation, data innovation, what innovation
support der » support de, support under, support deep
support eat » support each, support a, support act

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support der integration model. ) or ( support eat innovation theory. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support der integration model. ) OR ( support eat innovation theory. ))*.