Perhaps you should try some spelling variations:
"care management activity." » "care management activities.", "care management facility.", "care management authority.", "case management activity.", "fire management activity.", "change management activity."
"waste management quality." » "waste management capacity."
"debt management centers." » "debt management controls.", "debt management water.", "debt management energy."
"demand management case." » "land management case.", "demand management a."
"data management contracts." » "bank management contracts.", "chain management contracts.", "basin management contracts."

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: (((((("care management activity.") OR ("waste management quality."))) OR ((((("debt management centers.") OR ("demand management case."))) OR ((((("data management contracts.") OR ("cash management contracts."))) OR ("asset management control."))))))) OR ("risk management concepts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"care management activity.\") or (\"waste management quality.\"))) or (((((\"debt management centers.\") or (\"demand management case.\"))) or (((((\"data management contracts.\") OR (\"cash management contracts.\"))) or (\"asset management control.\"))))))) or (\"risk management concepts.\"))~".
• Removing quotes may allow a broader search: (((((( care management activity. ) or ( waste management quality. ))) or ((((( debt management centers. ) or ( demand management case. ))) or ((((( data management contracts. ) OR ( cash management contracts. ))) or ( asset management control. ))))))) or ( risk management concepts. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("care management activity.") or ("waste management quality."))) or ((((("debt management centers.") or ("demand management case."))) or ((((("data management contracts.") OR ("cash management contracts."))) or ("asset management control."))))))) or ("risk management concepts."))*.