Perhaps you should try some spelling variations:
integration schemes » integration schengen, irrigation schemes, integration regimes
interaction series » interactions series, interaction studies, interaction terms
fare interaction » face interaction, face interactions, fare integration
cost integration » post integration, test integration, about integration
supply fare » supply farm, supply case, supply figure
supply cost » supply costs

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 cost integration schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply fare interaction series. ) OR ( supply cost integration schemes. )).
• Adding a wildcard symbol may retrieve word variants: (( supply fare interaction series. ) or ( supply cost integration schemes. ))*.