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

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: (((((("farm management control.") or ((("land management centers.") OR ("land management energy."))))) or ("reform management centers."))) or ("oxford management controls."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("farm management control.") OR ((("land management centers.") OR ("land management energy."))))) OR ("reform management centers."))) OR ("oxford management controls.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"farm management control.\") or (((\"land management centers.\") OR (\"land management energy.\"))))) or (\"reform management centers.\"))) or (\"oxford management controls.\"))".
• Removing quotes may allow a broader search: (((((( farm management control. ) or ((( land management centers. ) OR ( land management energy. ))))) or ( reform management centers. ))) or ( oxford management controls. )).
• Adding a wildcard symbol may retrieve word variants: (((((("farm management control.") or ((("land management centers.") OR ("land management energy."))))) or ("reform management centers."))) or ("oxford management controls."))*.