Perhaps you should try some spelling variations:
"oxford management concepts." » "oxford management contracts.", "records management concepts.", "flood management concepts.", "farm management concepts."
"reform management reports." » "reform management reform.", "farm management reports.", "firm management reports."
"fund management control." » "fund management contracts.", "land management control.", "demand management control."
"oxford management data." » "records management data.", "flood management data.", "farm management data.", "oxford management a.", "oxford management case."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("reform management reports.") or ((((("oxford management concepts.") or ("oxford management data."))) or ("fund management control."))))~.
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• Removing quotes may allow a broader search: (( reform management reports. ) or ((((( oxford management concepts. ) or ( oxford management data. ))) or ( fund management control. )))).
• Adding a wildcard symbol may retrieve word variants: (("reform management reports.") or ((((("oxford management concepts.") or ("oxford management data."))) or ("fund management control."))))*.