Perhaps you should try some spelling variations:
internationalen personen » internationalen dimensionen, internationale aktionen, internationalen personaleinsatz
internationalem personal » international personas, intentional personal, international person
internationale personal » international personas, international person, international personality
und strategieforschung » der strategieforschung, einer strategieforschung, und strategieausrichtung

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((internationale personal) OR (internationalen personen))) OR (internationalem personal))- und strategieforschung.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((internationale personal) OR (internationalen personen))) or (internationalem personal))- und strategieforschung".
• Adding a wildcard symbol may retrieve word variants: ((((internationale personal) OR (internationalen personen))) or (internationalem personal))- und strategieforschung*.