Perhaps you should try some spelling variations:
"supply cost interaction series." » "supply cost interactions series.", "supply cost interaction studies.", "supply cost interaction terms.", "supply host interaction series.", "supply host interactions series.", "supply robot interaction series.", "supply costs interaction series."
"supply crop irrigation schemes." » "supply crop irrigation scheme.", "supply crop irrigation systems.", "supply drip irrigation schemes.", "supply scale irrigation schemes.", "supply canal irrigation schemes.", "supply crowd irrigation schemes.", "supply from irrigation schemes.", "supply europe irrigation schemes."

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

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