Perhaps you should try some spelling variations:
cost integrationstheorie » der integrationstheorie, eine integrationstheorie
integrationstheorie 2 » integrationstheorie fur, integration theories, interpretationstheorie 2
chain irrigation » grain irrigation, change irrigation, basin irrigation
supply cost » supply costs
systems. » system.

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

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