Perhaps you should try some spelling variations:
"city management functions." » "city management operations.", "city management practices.", "city management education.", "data management functions.", "crop management functions.", "security management functions."
"cash management concepts." » "cash management contracts.", "asset management concepts."
"demand management controls." » "demand management contracts.", "demand management contract.", "demand management tools.", "demand management contractss.", "land management controls."
"city management quality." » "city management capacity.", "data management quality.", "crop management quality.", "security management quality."
"forest management control." » "forest management contracts.", "project management control.", "asset management control."
"demand management centers." » "demand management water.", "demand management energy.", "demand management entity.", "land management centers."
"debt management centers." » "debt management water.", "debt management energy.", "debt management entity."
"case management agency." » "case management agencies.", "case management science.", "case management areas.", "waste management agency.", "change management agency.", "asset management agency."

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