Perhaps you should try some spelling variations:
climate interventionssystem » climate interventions
interventionssystem 3 » intervention system, intervention systemic, intervention systems
integration theories » integration theorems, integrationstheorie 2, integration theory
key integration » der integration, de integration, 2e integration
support key » support de, support deep

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support key integration theories. ) or ( support climate interventionssystem 3. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support key integration theories. ) OR ( support climate interventionssystem 3. )).
• Adding a wildcard symbol may retrieve word variants: (( support key integration theories. ) or ( support climate interventionssystem 3. ))*.