Perhaps you should try some spelling variations:
interaction series » interactions series, interaction studies, interaction terms
trade interaction » trade integration, face interaction, time interaction
fare interaction » face interaction, face interactions, fare integration
supply trade » supply case
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 fare interaction series. ) or ( supply trade interaction series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply fare interaction series. ) OR ( supply trade interaction series. )).
• Adding a wildcard symbol may retrieve word variants: (( supply fare interaction series. ) or ( supply trade interaction series. ))*.