Perhaps you should try some spelling variations:
"supply grid integration theories." » "supply grid integration theorems.", "supply grid integrationstheorie 2.", "supply grid integration theory.", "supply crowd integration theories.", "supply great integration theories.", "support grid integration theories."
"supply fare integration schemes." » "supply fare integration schengen.", "supply fare irrigation schemes.", "supply fare integration regimes.", "supply trade integration schemes.", "supply die integration schemes.", "supply farm integration schemes.", "supply case integration schemes.", "supply figure integration schemes."

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 fare integration schemes.") OR ("supply grid integration theories."))~.
• Removing quotes may allow a broader search: (( supply fare integration schemes. ) or ( supply grid integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply fare integration schemes.") or ("supply grid integration theories."))*.