Perhaps you should try some spelling variations:
"waste management activity." » "waste management activities.", "waste management facility.", "waste management authority."
"fishery management contract." » "fishery management control.", "fisheries management contract.", "fiscal management contract."
"change management contracts." » "change management controls.", "chain management contracts.", "finance management contracts."
"waste management entity." » "waste management energy.", "waste management quality.", "waste management centers."
"debt management entity." » "debt management energy.", "debt management quality.", "debt management centers."
"demand management _." » "land management _."
"cash management concepts." » "asset management concepts."
"care management case." » "case management case.", "fire management case.", "chain management case.", "care management a."
"city management issues." » "data management issues.", "case management issues.", "crop management issues."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((((((((("care management case.") or ("city management issues."))) or ("fishery management contract."))) or ((((("waste management entity.") OR ("debt management entity."))) or ("waste management activity."))))) or ((("demand management _.") or ("cash management concepts."))))) or ("change management contracts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((((("care management case.") OR ("city management issues."))) OR ("fishery management contract."))) OR ((((("waste management entity.") OR ("debt management entity."))) OR ("waste management activity."))))) OR ((("demand management _.") OR ("cash management concepts."))))) OR ("change management contracts.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((((\"care management case.\") or (\"city management issues.\"))) or (\"fishery management contract.\"))) or (((((\"waste management entity.\") OR (\"debt management entity.\"))) or (\"waste management activity.\"))))) or (((\"demand management _.\") or (\"cash management concepts.\"))))) or (\"change management contracts.\"))".
• Removing quotes may allow a broader search: (((((((((( care management case. ) or ( city management issues. ))) or ( fishery management contract. ))) or ((((( waste management entity. ) OR ( debt management entity. ))) or ( waste management activity. ))))) or ((( demand management _. ) or ( cash management concepts. ))))) or ( change management contracts. )).
• Adding a wildcard symbol may retrieve word variants: (((((((((("care management case.") or ("city management issues."))) or ("fishery management contract."))) or ((((("waste management entity.") OR ("debt management entity."))) or ("waste management activity."))))) or ((("demand management _.") or ("cash management concepts."))))) or ("change management contracts."))*.