Perhaps you should try some spelling variations:
"oxford management controls." » "oxford management control.", "oxford management contracts.", "oxford management contract.", "reform management controls.", "records management controls.", "fund management controls."
"land management controls." » "land management control.", "land management contracts.", "land management contract."
"demand management controls." » "demand management control.", "demand management contracts.", "demand management contract.", "debt management controls."
"farm management concepts." » "farm management contracts.", "cash management concepts.", "bank management concepts.", "data management concepts."

Try widening your search to All Fields.

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 controls.") or ((("land management controls.") or ("demand management controls."))))) or ("farm management concepts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford management controls.") OR ((("land management controls.") OR ("demand management controls."))))) OR ("farm management concepts.")).
• Removing quotes may allow a broader search: (((( oxford management controls. ) or ((( land management controls. ) or ( demand management controls. ))))) or ( farm management concepts. )).
• Adding a wildcard symbol may retrieve word variants: (((("oxford management controls.") or ((("land management controls.") or ("demand management controls."))))) or ("farm management concepts."))*.