Perhaps you should try some spelling variations:
"supply fare international efforts." » "supply fare international airports.", "supply fare international energy.", "supply fare international airport.", "supply care international efforts.", "supply large international efforts.", "supply area international efforts.", "supply farm international efforts.", "supply case international efforts.", "supply figure international efforts."
"supply costs interaction series." » "supply costs interactions series.", "supply costs interaction studies.", "supply costs interaction terms.", "supply cases interaction series.", "supply host interaction series.", "supply tests interaction series."

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 costs interaction series.") OR ("supply fare international efforts."))~.
• Removing quotes may allow a broader search: (( supply costs interaction series. ) or ( supply fare international efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply costs interaction series.") or ("supply fare international efforts."))*.