Perhaps you should try some spelling variations:
"land management controls." » "land management tools.", "land management concepts.", "land management functions."
"oxford management contracts." » "reform management contracts.", "records management contracts.", "fund management contracts."
"flood management contracts." » "fund management contracts."
"firm management control." » "farm management control.", "fire management control.", "city management control."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("firm management control.") or ((((("oxford management contracts.") or ("flood management contracts."))) or ((("land management controls.") or ("land management contract."))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("firm management control.") OR ((((("oxford management contracts.") OR ("flood management contracts."))) OR ((("land management controls.") OR ("land management contract.")))))).
• Removing quotes may allow a broader search: (( firm management control. ) or ((((( oxford management contracts. ) or ( flood management contracts. ))) or ((( land management controls. ) or ( land management contract. )))))).
• Adding a wildcard symbol may retrieve word variants: (("firm management control.") or ((((("oxford management contracts.") or ("flood management contracts."))) or ((("land management controls.") or ("land management contract."))))))*.