Perhaps you should try some spelling variations:
"land management controls." » "land management contract.", "land management tools.", "land management concepts."
"oxford management review." » "records management review.", "flood management review.", "farm management review."
"oxford management reform." » "records management reform.", "flood management reform.", "farm management reform."
"reform management _." » "farm management _."
"firm management control." » "farm management control.", "fire management control.", "city management control."
"demand management data." » "demand management a.", "demand management case."
"debt management data." » "debt management a.", "debt management case."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford management review.") OR ("oxford management reform."))) OR ((((((("firm management control.") OR ("land management controls."))) OR ((("reform management _.") OR ((("demand management data.") OR ("debt management data."))))))) OR ("fund management contracts."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"oxford management review.\") OR (\"oxford management reform.\"))) or (((((((\"firm management control.\") or (\"land management controls.\"))) or (((\"reform management _.\") or (((\"demand management data.\") or (\"debt management data.\"))))))) or (\"fund management contracts.\"))))~".
• Removing quotes may allow a broader search: (((( oxford management review. ) OR ( oxford management reform. ))) or ((((((( firm management control. ) or ( land management controls. ))) or ((( reform management _. ) or ((( demand management data. ) or ( debt management data. ))))))) or ( fund management contracts. ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("oxford management review.") OR ("oxford management reform."))) or ((((((("firm management control.") or ("land management controls."))) or ((("reform management _.") or ((("demand management data.") or ("debt management data."))))))) or ("fund management contracts."))))*.