Perhaps you should try some spelling variations:
"imf's policy discussion papers" » "imf's policy discussion paper", "imf's policy discussion panel"
"imf's policy discussion part" » "imf's policy discussion paper"
"imf's policy decision part" » "imf's policy decisions part", "imf's policy design part", "imf's policy decision point"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("imf's policy discussion papers") OR ((("imf's policy discussion part") OR ("imf's policy decision part")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"imf's policy discussion papers\") or (((\"imf's policy discussion part\") OR (\"imf's policy decision part\"))))".
• Removing quotes may allow a broader search: (( imf's policy discussion papers ) or ((( imf's policy discussion part ) OR ( imf's policy decision part )))).
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