Perhaps you should try some spelling variations:
"collective management prm history" » "collection management prm history", "collective l'engagement prm history", "conjunctive management prm history", "collective management prme history", "collective management pbm history", "collective management pim history", "collective management arm history", "collective management from history", "collective management firm history"
"collective identities africa history" » "collective identity africa history", "kollektive identitaten africa history", "kollektive identitat africa history", "collective identities across history", "collective identities aims history", "collective identities from history", "collective identities america history", "collective identities american history", "collective identities asia history"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("collective management prm history") or ("collective identities africa history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("collective management prm history") OR ("collective identities africa history")).
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• Adding a wildcard symbol may retrieve word variants: (("collective management prm history") or ("collective identities africa history"))*.