Perhaps you should try some spelling variations:
"supply school reintegration der." » "supply school integration der.", "supply social reintegration der.", "supply school integrating der.", "supply school reintegration _.", "supply school integration des.", "supplies school reintegration der.", "support school reintegration der.", "supply shock reintegration der."
"supply grid integration efforts." » "supply grid international efforts.", "supply grid conservation efforts.", "supply crowd integration efforts.", "supply great integration efforts.", "support grid integration efforts."

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 school reintegration der.") OR ("supply grid integration efforts."))~.
• Removing quotes may allow a broader search: (( supply school reintegration der. ) or ( supply grid integration efforts. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply school reintegration der.") or ("supply grid integration efforts."))*.