Perhaps you should try some spelling variations:
interactions series » interactions between
irrigation system » irrigation systems, irrigation water, irrigation scheme
cost interactions » host interactions, host interaction, iot interactions
data irrigation » delta irrigation, canal irrigation, water irrigation
supply cost » supply costs

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

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