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.", "firm management readers."
"farm management readers." » "farm management centers.", "farm management reviews.", "farm management reform.", "cash management readers.", "bank management readers.", "data 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 ("farm management readers."))) OR ((("case management readers.") OR ("city management concepts."))))) OR ("oxford management control."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"reform management readers.\") OR (\"farm 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 ( farm 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 ("farm management readers."))) or ((("case management readers.") or ("city management concepts."))))) or ("oxford management control."))*.