Perhaps you should try some spelling variations:
fare integrationstheorie » der integrationstheorie, eine integrationstheorie
integrationstheorie 2 » integrationstheorie fur, integration theories, interpretationstheorie 2
internet services » internet service
data internet » das internet, data internal, detail internet
supply fare » supply farm, supply case, supply figure

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

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