Perhaps you should try some spelling variations:
"city management concepts." » "city management contracts.", "cash management concepts.", "data management concepts.", "crop management concepts."
"reform management readers." » "reform management centers.", "reform management reviews.", "reform management reform.", "farm management readers.", "firm management readers."
"case management readers." » "case management centers.", "case management reviews.", "case management reform.", "cash management readers.", "waste management readers.", "change management readers."
"oxford management control." » "oxford management contracts.", "records management control.", "fund management control.", "flood management control."

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: (((("reform management readers.") OR ((("case management readers.") OR ("city management concepts."))))) OR ("oxford management control."))~.
• Removing quotes may allow a broader search: (((( reform management readers. ) or ((( case management readers. ) or ( city management concepts. ))))) or ( oxford management control. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("reform management readers.") or ((("case management readers.") or ("city management concepts."))))) or ("oxford management control."))*.