Perhaps you should try some spelling variations:
"land management controls." » "land management contract.", "land management tools.", "land management concepts."
"reform management control." » "farm management control.", "firm management control."
"oxford management contracts." » "records management contracts.", "fund management contracts.", "flood management contracts."

Try widening your search to All Fields.

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