Perhaps you should try some spelling variations:
internationalen regime » international regime, international regimes, internationalen raum
interaction series » interactions series, interaction studies, interaction terms
3.1 interaction » 3.2 interaction, 3 interaction, 2 interaction
supply 3.1 » supply 3.3, supply 4.1, supply 3.2
supply den » supply demand, supply design, supply driven
supply ann » supply a, supply annual, supply chain

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply 3.1 interaction series. ) or ( ((supply den) OR (supply ann)) internationalen regime. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply 3.1 interaction series. ) OR ( ((supply den) OR (supply ann)) internationalen regime. ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply 3.1 interaction series. ) or ( ((supply den) OR (supply ann)) internationalen regime. ))*".