Perhaps you should try some spelling variations:
"supply chain integration series." » "supply chain integration theories.", "supply chain integrating services.", "supply chain integration schemes.", "supply trade integration series.", "supply data integration series.", "supply grid integration series."
"Supply soil conservation efforts." » "Supply _ conservation efforts."
supply soil » supply social, supply school, supply shock

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 chain integration series.") OR ("Supply soil conservation efforts."))~.
• Removing quotes may allow a broader search: (( supply chain integration series. ) or ( Supply soil conservation efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply chain integration series.") or ("Supply soil conservation efforts."))*.