Perhaps you should try some spelling variations:
"city management controls." » "city management control.", "city management contract.", "city management tools.", "cash management controls.", "data management controls.", "case management controls."
"farm management agency." » "farm management agencies.", "farm management science.", "farm management areas.", "cash management agency.", "bank management agency.", "data management agency."
"change management concepts." » "chain management concepts.", "finance management concepts.", "cash management concepts."
"asset management based." » "asset management issues.", "asset management a.", "asset management data."
"asset management board." » "asset management a.", "asset management data.", "asset management how."
"debt management case." » "debt 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 controls.") OR ((("farm management agency.") OR ((((((("asset management based.") OR ("asset management board."))) OR ("debt management case."))) OR ("asset management _."))))))) OR ((("change management concepts.") OR ("waste management contracts."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"city management controls.\") or (((\"farm management agency.\") or (((((((\"asset management based.\") OR (\"asset management board.\"))) or (\"debt management case.\"))) or (\"asset management _.\"))))))) or (((\"change management concepts.\") or (\"waste management contracts.\"))))~".
• Removing quotes may allow a broader search: (((( city management controls. ) or ((( farm management agency. ) or ((((((( asset management based. ) OR ( asset management board. ))) or ( debt management case. ))) or ( asset management _. ))))))) or ((( change management concepts. ) or ( waste management contracts. ))))~.
• Adding a wildcard symbol may retrieve word variants: (((("city management controls.") or ((("farm management agency.") or ((((((("asset management based.") OR ("asset management board."))) or ("debt management case."))) or ("asset management _."))))))) or ((("change management concepts.") or ("waste management contracts."))))*.