Perhaps you should try some spelling variations:
"fund management controls." » "fund management control.", "fund management contract.", "fund management tools.", "demand management controls."
"flood management centers." » "flood management control.", "flood management water.", "flood management energy."
"oxford management reform." » "reform management reform.", "records management reform.", "farm management reform."
"firm management review." » "farm management review.", "fire management review.", "city management review."

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