Perhaps you should try some spelling variations:
integration regional » integration report
interaction series » interactions series, interaction studies, interaction terms
curve integration » care integration, burke integration, curvello integration
fare interaction » face interaction, face interactions, fare integration
supply fare » supply farm, supply case, supply figure

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

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