Perhaps you should try some spelling variations:
"oxford management concepts." » "oxford management contracts.", "reform management concepts.", "records management concepts.", "fund management concepts."
"data management controls." » "data management contracts.", "data management contract.", "data management tools.", "data management contractss.", "debt management controls.", "cash management controls.", "bank management controls."
"farm management control." » "farm management contracts.", "cash management control.", "bank management control.", "forest 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: (("oxford management concepts.") or ((("data management controls.") or ("farm management control."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("oxford management concepts.") OR ((("data management controls.") OR ("farm management control.")))).
• Removing quotes may allow a broader search: (( oxford management concepts. ) or ((( data management controls. ) or ( farm management control. )))).
• Adding a wildcard symbol may retrieve word variants: (("oxford management concepts.") or ((("data management controls.") or ("farm management control."))))*.