Perhaps you should try some spelling variations:
"supply curve integration theories." » "supply curve integration theory.", "supply curve integration through.", "supply curve integration efforts.", "supply care integration theories.", "supply fare integration theories.", "supply use integration theories."
"supply grid integration series." » "supply grid integrating services.", "supply grid integration schemes.", "supply grid integration social.", "supply trade integration series.", "supply _ integration series.", "supply data integration series.", "supply crowd integration series.", "support grid 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 curve integration theories.") OR ("supply grid integration series."))~.
• Removing quotes may allow a broader search: (( supply curve integration theories. ) or ( supply grid integration series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply curve integration theories.") or ("supply grid integration series."))*.