Perhaps you should try some spelling variations:
"fund management centers." » "fund management concepts.", "fund management controls.", "fund management control.", "demand management centers."
"land management centers." » "land management concepts.", "land management controls.", "land management control."
"oxford management reform." » "reform management reform.", "records management reform.", "flood management reform."
"oxford management reports." » "reform management reports.", "records management reports.", "flood management reports."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("oxford management reform.") or ("oxford management reports."))) or ((("fund management centers.") OR ("land management centers."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford management reform.") OR ("oxford management reports."))) OR ((("fund management centers.") OR ("land management centers.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"oxford management reform.\") or (\"oxford management reports.\"))) or (((\"fund management centers.\") OR (\"land management centers.\"))))".
• Removing quotes may allow a broader search: (((( oxford management reform. ) or ( oxford management reports. ))) or ((( fund management centers. ) OR ( land management centers. )))).
• Adding a wildcard symbol may retrieve word variants: (((("oxford management reform.") or ("oxford management reports."))) or ((("fund management centers.") OR ("land management centers."))))*.