Perhaps you should try some spelling variations:
"land management controls." » "land management control.", "land management contract.", "land management functions."
"flood management centers." » "flood management control.", "flood management water.", "flood management entity.", "fund management centers."
"oxford management concepts." » "records management concepts.", "fund management concepts.", "farm management concepts."
"flood management energy." » "flood management entity.", "flood management agency.", "fund management energy."
"demand management tools." » "debt management tools."
"reform management contracts." » "farm management contracts.", "firm management contracts."

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: (((("oxford management concepts.") or ((("flood management centers.") or ("flood management energy."))))) or ((((("demand management tools.") or ("land management controls."))) or ("reform management contracts."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford management concepts.") OR ((("flood management centers.") OR ("flood management energy."))))) OR ((((("demand management tools.") OR ("land management controls."))) OR ("reform management contracts.")))).
• Removing quotes may allow a broader search: (((( oxford management concepts. ) or ((( flood management centers. ) or ( flood management energy. ))))) or ((((( demand management tools. ) or ( land management controls. ))) or ( reform management contracts. )))).
• Adding a wildcard symbol may retrieve word variants: (((("oxford management concepts.") or ((("flood management centers.") or ("flood management energy."))))) or ((((("demand management tools.") or ("land management controls."))) or ("reform management contracts."))))*.