Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
integration efforts » conservation efforts
grid integration » trade integration, _ integration, data integration
supply china » supply chains, supply chain
supply grid » supply crowd, support grid

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 integration efforts. ) or ( supply china international efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply grid integration efforts. ) OR ( supply china international efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( supply grid integration efforts. ) or ( supply china international efforts. ))*.