Perhaps you should try some spelling variations:
"firm management controls." » "firm management control.", "firm management contract.", "firm management tools.", "farm management controls.", "fire management controls.", "city management controls."
"bank management controls." » "bank management control.", "bank management contract.", "bank management tools.", "basin management controls.", "risk management controls.", "cash management controls."
"land management centers." » "land management concepts.", "land management control.", "land management water."
"oxford management review." » "records management review.", "fund management review.", "farm management review."
"oxford management reform." » "records management reform.", "fund management reform.", "farm management reform."
"reform management a." » "farm management a.", "reform management _."
"flood management contracts." » "fund management contracts."
"debt management data." » "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 controls.") OR ("bank management controls."))) OR ("land management centers."))) OR ((("reform management a.") OR ("debt management data."))))) OR ("flood 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 controls.\") or (\"bank management controls.\"))) or (\"land management centers.\"))) or (((\"reform management a.\") or (\"debt management data.\"))))) or (\"flood management contracts.\"))))~".
• Removing quotes may allow a broader search: (((( oxford management review. ) OR ( oxford management reform. ))) or ((((((((( firm management controls. ) or ( bank management controls. ))) or ( land management centers. ))) or ((( reform management a. ) or ( debt management data. ))))) or ( flood management contracts. ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("oxford management review.") OR ("oxford management reform."))) or ((((((((("firm management controls.") or ("bank management controls."))) or ("land management centers."))) or ((("reform management a.") or ("debt management data."))))) or ("flood management contracts."))))*.