Perhaps you should try some spelling variations:
"supply grid international efforts." » "supply grid international airports.", "supply grid international energy.", "supply grid international airport.", "supply third international efforts.", "supply trade international efforts.", "supply from international efforts.", "supply crowd international efforts.", "support grid international efforts."
"support eu integration power." » "support eu integration some.", "support eu integration process.", "support eu international power.", "support _ integration power.", "support deep integration power.", "support data integration power.", "support key integration power.", "support a integration power."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply grid international efforts.") or ("support eu integration power."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply grid international efforts.") OR ("support eu integration power.")).
• Removing quotes may allow a broader search: (( supply grid international efforts. ) or ( support eu integration power. )).
• Adding a wildcard symbol may retrieve word variants: (("supply grid international efforts.") or ("support eu integration power."))*.