Perhaps you should try some spelling variations:
"land management controls." » "land management control.", "land management tools.", "land management functions."
"demand management controls." » "demand management control.", "demand management tools.", "demand management functions.", "debt management controls."
"oxford management contracts." » "oxford management controls.", "reform management contracts.", "records management contracts.", "fund management contracts."
"demand management contract." » "demand management control.", "debt management contract."
"farm management concepts." » "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 contracts.") or ((("land management controls.") or ((("demand management controls.") or ("demand management contract."))))))) or ("farm management concepts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford management contracts.") OR ((("land management controls.") OR ((("demand management controls.") OR ("demand management contract."))))))) OR ("farm management concepts.")).
• Removing quotes may allow a broader search: (((( oxford management contracts. ) or ((( land management controls. ) or ((( demand management controls. ) or ( demand management contract. ))))))) or ( farm management concepts. )).
• Adding a wildcard symbol may retrieve word variants: (((("oxford management contracts.") or ((("land management controls.") or ((("demand management controls.") or ("demand management contract."))))))) or ("farm management concepts."))*.