Perhaps you should try some spelling variations:
"proceedings ed report" » "proceedings el report", "proceedings 2nd report", "proceedings 3rd report", "proceedings d report", "proceedings oecd report", "proceedings need report"
"proceedings ec report" » "proceedings etc report", "proceedings 2 report", "proceedings 1 report", "proceedings epc report", "proceedings eec report", "proceedings iec 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 ed report\") OR (\"proceedings ec report\"))".
• Removing quotes may allow a broader search: (( proceedings ed report ) OR ( proceedings ec report )).
• Adding a wildcard symbol may retrieve word variants: (("proceedings ed report") OR ("proceedings ec report"))*.