Perhaps you should try some spelling variations:
"supply species interactions series." » "supply social interactions series.", "supply social interaction series.", "supply species interaction terms.", "supply species interactions between.", "supply agencies interactions series."
"supply fiscal integration series." » "supply financial integration series.", "supply global integration series.", "supply social integration series.", "supply fiscal integration theories.", "supply fiscal integrating services.", "supply fiscal integration schemes.", "support fiscal integration 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 fiscal integration series.") OR ("supply species interactions series."))~.
• Removing quotes may allow a broader search: (( supply fiscal integration series. ) or ( supply species interactions series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply fiscal integration series.") or ("supply species interactions series."))*.