Perhaps you should try some spelling variations:
"case management controls." » "case management control.", "case management contract.", "case management tools.", "waste management controls.", "change management controls.", "asset management controls."
"city management centers." » "city management control.", "city management water.", "city management energy.", "data management centers.", "crop management centers.", "security management centers."
"demand management a." » "debt management a.", "demand management _."
"reform management concepts." » "firm management concepts."
"farm management reform." » "bank management reform.", "data management reform.", "forest management reform."
"cash management reform." » "asset management reform."

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: (((("farm management reform.") OR ("cash management reform."))) OR ((((((("city management centers.") OR ("case management controls."))) OR ("demand management a."))) OR ((("land management contracts.") OR ("reform management concepts."))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"farm management reform.\") OR (\"cash management reform.\"))) or (((((((\"city management centers.\") or (\"case management controls.\"))) or (\"demand management a.\"))) or (((\"land management contracts.\") or (\"reform management concepts.\"))))))~".
• Removing quotes may allow a broader search: (((( farm management reform. ) OR ( cash management reform. ))) or ((((((( city management centers. ) or ( case management controls. ))) or ( demand management a. ))) or ((( land management contracts. ) or ( reform management concepts. ))))))~.
• Adding a wildcard symbol may retrieve word variants: (((("farm management reform.") OR ("cash management reform."))) or ((((((("city management centers.") or ("case management controls."))) or ("demand management a."))) or ((("land management contracts.") or ("reform management concepts."))))))*.