Perhaps you should try some spelling variations:
"oxford management concepts." » "oxford management contracts.", "reform management concepts.", "records management concepts.", "farm management concepts."
"fund management review." » "fund management reform.", "land management review.", "demand management review."
"oxford management water." » "reform management water.", "records management water.", "farm management water.", "oxford management based.", "oxford management a.", "oxford management areas."
"oxford management case." » "reform management case.", "records management case.", "farm management case.", "oxford management a."
"flood management data." » "land management data.", "flood management a."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("fund management review.") or ((((((("oxford management water.") or ("oxford management case."))) or ("flood management data."))) or ("oxford management concepts."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("fund management review.") OR ((((((("oxford management water.") OR ("oxford management case."))) OR ("flood management data."))) OR ("oxford management concepts.")))).
• Removing quotes may allow a broader search: (( fund management review. ) or ((((((( oxford management water. ) or ( oxford management case. ))) or ( flood management data. ))) or ( oxford management concepts. )))).
• Adding a wildcard symbol may retrieve word variants: (("fund management review.") or ((((((("oxford management water.") or ("oxford management case."))) or ("flood management data."))) or ("oxford management concepts."))))*.