Perhaps you should try some spelling variations:
"oxford management concepts." » "oxford management contracts.", "reform management concepts.", "records management concepts.", "fund management concepts."
"demand management controls." » "demand management control.", "demand management contracts.", "demand management contract.", "land management controls.", "debt management controls."
"cash management reform." » "asset management reform."
"farm management review." » "bank management review.", "data management review.", "forest management review."
"firm management reports." » "fire management reports.", "city management reports.", "care management reports."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("demand management controls.") or ((((("cash management reform.") or ("farm management review."))) or ("firm management reports."))))) or ("oxford management concepts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("demand management controls.") OR ((((("cash management reform.") OR ("farm management review."))) OR ("firm management reports."))))) OR ("oxford management concepts.")).
• Removing quotes may allow a broader search: (((( demand management controls. ) or ((((( cash management reform. ) or ( farm management review. ))) or ( firm management reports. ))))) or ( oxford management concepts. )).
• Adding a wildcard symbol may retrieve word variants: (((("demand management controls.") or ((((("cash management reform.") or ("farm management review."))) or ("firm management reports."))))) or ("oxford management concepts."))*.