Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
operation efforts » conservation efforts, exploration efforts, education efforts
school operation » school operations, school population, school education
supply school » supplies school, support school, supply shock
supply grid » supply crowd, supply great, 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 school operation efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply grid integration efforts. ) OR ( supply school operation efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( supply grid integration efforts. ) or ( supply school operation efforts. ))*.