Perhaps you should try some spelling variations:
"land management concepts." » "land management contracts."
"oxford management readers." » "oxford management centers.", "oxford management reviews.", "oxford management reform.", "records management readers.", "road management readers.", "fire management readers."
"reform management control." » "reform management contracts.", "firm management control."
"farm management issues." » "farm management case.", "cash management issues.", "bank management issues.", "data management issues."
"fund management water." » "fund management case.", "fund management based.", "fund management a.", "demand management water."
"fund management data." » "demand management data.", "fund management a.", "fund management case."

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 readers.") or ((((("land management concepts.") or ((((((("fund management water.") or ("fund management data."))) or ("flood management _."))) or ("farm management issues."))))) or ("reform management control."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("oxford management readers.") OR ((((("land management concepts.") OR ((((((("fund management water.") OR ("fund management data."))) OR ("flood management _."))) OR ("farm management issues."))))) OR ("reform management control.")))).
• Removing quotes may allow a broader search: (( oxford management readers. ) or ((((( land management concepts. ) or ((((((( fund management water. ) or ( fund management data. ))) or ( flood management _. ))) or ( farm management issues. ))))) or ( reform management control. )))).
• Adding a wildcard symbol may retrieve word variants: (("oxford management readers.") or ((((("land management concepts.") or ((((((("fund management water.") or ("fund management data."))) or ("flood management _."))) or ("farm management issues."))))) or ("reform management control."))))*.