Perhaps you should try some spelling variations:
interaction series » interactions series, interaction studies, interaction terms
costs interaction » cases interaction, host interaction, tests interaction
motivation theory » motivation der, innovation theory
die motivation » der motivation, 1 motivation, 1.1 motivation
supply die » supply driven

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply costs interaction series. ) or ( supply die motivation theory. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply costs interaction series. ) OR ( supply die motivation theory. )).
• Adding a wildcard symbol may retrieve word variants: (( supply costs interaction series. ) or ( supply die motivation theory. ))*.