Perhaps you should try some spelling variations:
"oxford management concepts." » "oxford management contracts.", "reform management concepts.", "records management concepts.", "fund management concepts."
"demand management concepts." » "demand management contracts.", "land management concepts.", "debt management concepts."
"oxford management reform." » "reform management reform.", "records management reform.", "fund management reform."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("oxford management reform.") or ((("oxford management concepts.") or ("demand management concepts."))))~.
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• Adding a wildcard symbol may retrieve word variants: (("oxford management reform.") or ((("oxford management concepts.") or ("demand management concepts."))))*.