Perhaps you should try some spelling variations:
"supply states international prices." » "supply paths international prices.", "supply services international prices.", "supply rates international prices.", "supply strategy international prices.", "supply systems international prices.", "supply states international price."
"supply side interaction series." » "supply side interactions series.", "supply side interaction studies.", "supply side interaction terms.", "supply time interaction series.", "supply like interaction series.", "supply node interaction series."

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

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