Perhaps you should try some spelling variations:
regional integrationstheorie » eine integrationstheorie, regionale innovationstheorien, revidierte integrationstheorie
integrationstheorie 2 » integrationstheorie fur, integration theories, interpretationstheorie 2
track innovation » trade innovation, tracking innovation, risk innovation
innovation how » innovation house, innovation 1, innovation 4
supply track » supply trade, supply block

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 regional integrationstheorie 2. ) OR ( supply track innovation how. ))~.
• Adding a wildcard symbol may retrieve word variants: (( support regional integrationstheorie 2. ) or ( supply track innovation how. ))*.