Perhaps you should try some spelling variations:
"land management concepts." » "land management contracts."
"oxford management controls." » "oxford management contracts.", "oxford management contract.", "oxford management tools.", "oxford management contractss.", "reform management controls.", "records management controls.", "fund management controls."
"oxford management centers." » "oxford management water.", "oxford management energy.", "oxford management contracts.", "reform management centers.", "records management centers.", "fund management centers."
"demand management control." » "demand management contracts.", "debt management control."
"land management entity." » "land management energy.", "land management activity.", "land management quality."

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