Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
tool integration » global integration, social integration, 3 integration
donor innovation » der innovation, your innovation, norm innovation
supply donor » supply food
supply tool » supply school, support tool

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

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