Perhaps you should try some spelling variations:
"land management controls." » "land management contract.", "land management tools.", "land management functions."
"reform management reviews." » "reform management review.", "reform management overview.", "reform management reports.", "firm management reviews."
"farm management reviews." » "farm management review.", "farm management overview.", "farm management reports.", "cash management reviews.", "bank management reviews.", "data management reviews."
"oxford management reform." » "records management reform.", "flood management reform.", "road management reform."
"demand management control." » "debt management control."

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: (((((("reform management reviews.") OR ("farm management reviews."))) OR ("oxford management reform."))) OR ((((("fund management concepts.") OR ("demand management control."))) OR ((("land management controls.") OR ("land management contracts."))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"reform management reviews.\") OR (\"farm management reviews.\"))) or (\"oxford management reform.\"))) or (((((\"fund management concepts.\") or (\"demand management control.\"))) or (((\"land management controls.\") or (\"land management contracts.\"))))))~".
• Removing quotes may allow a broader search: (((((( reform management reviews. ) OR ( farm management reviews. ))) or ( oxford management reform. ))) or ((((( fund management concepts. ) or ( demand management control. ))) or ((( land management controls. ) or ( land management contracts. ))))))~.
• Adding a wildcard symbol may retrieve word variants: (((((("reform management reviews.") OR ("farm management reviews."))) or ("oxford management reform."))) or ((((("fund management concepts.") or ("demand management control."))) or ((("land management controls.") or ("land management contracts."))))))*.