Perhaps you should try some spelling variations:
"proceedings el report" » "proceedings ec report", "proceedings etc report", "proceedings 2 report", "proceedings rl report", "proceedings evil report", "proceedings all report"
"proceedings ed report" » "proceedings ec report", "proceedings 2nd report", "proceedings 3rd report", "proceedings d report", "proceedings oecd report", "proceedings need report"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"proceedings el report\") OR (\"proceedings ed report\"))".
• Removing quotes may allow a broader search: (( proceedings el report ) OR ( proceedings ed report )).
• Adding a wildcard symbol may retrieve word variants: (("proceedings el report") OR ("proceedings ed report"))*.