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

You may be able to get more results by adjusting your search query.

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