Perhaps you should try some spelling variations:
eine integrationstheorie » der integrationstheorie, revidierte integrationstheorie, die generationstheorie
integrationstheorie 2 » integrationstheorie fur, integration theories, interpretationstheorie 2
existing services » exporting services, testing services, nursing services
five existing » lives existing, define existing, pre existing
supply eine » supply lines, supply china
supply five » supply driven, supply figure, supply curve

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: (( supply eine integrationstheorie 2. ) OR ( supply five existing services. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply eine integrationstheorie 2. ) or ( supply five existing services. ))*.