Perhaps you should try some spelling variations:
trade integrationstheorie » der integrationstheorie, eine integrationstheorie, traditionelle integrationstheorie
integrationstheorie 2 » integrationstheorie fur, integration theories, interpretationstheorie 2
internet services » internet service
detail internet » retail interest, mail internet
supply detail » supply demand, supply data
supply trade » supply case

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply trade integrationstheorie 2. ) or ( supply detail internet services. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply trade integrationstheorie 2. ) OR ( supply detail internet services. )).
• Adding a wildcard symbol may retrieve word variants: (( supply trade integrationstheorie 2. ) or ( supply detail internet services. ))*.