Perhaps you should try some spelling variations:
interaction series » interactions series, interaction studies, interaction terms
vector interaction » sector interactions, actor interaction, sector integration
irrigation schemes » irrigation scheme, irrigation systems
data irrigation » delta irrigation, canal irrigation, water irrigation
supply vector » supply sector, support vector, supply factors

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

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