Perhaps you should try some spelling variations:
"oxford management concepts." » "oxford management contracts.", "reform management concepts.", "records management concepts.", "fund management concepts."
"city management readers." » "city management centers.", "city management reviews.", "city management reports.", "cash management readers.", "data management readers.", "case management readers."
"oxford management reform." » "reform management reform.", "records management reform.", "fund management reform."
"oxford management case." » "reform management case.", "records management case.", "fund management case.", "oxford management a."

You may be able to get more results by adjusting your search query.

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