Perhaps you should try some spelling variations:
interaction series » interactions series, interaction studies, interaction terms
trade interaction » trade integration, face interaction, time interaction
irrigation scheme » irrigation systems
supply change » supply charges, supply channels, supply chain's
supply case » supply cost, supply chain, supply curve

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

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