Perhaps you should try some spelling variations:
"waste management facility." » "waste management quality."
"risk management agencies." » "risk management policies.", "risk management principles."
"chain management issues." » "chain management case."
"fire management contract." » "side management contract.", "case management contract.", "zone management contract."

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: (((((((("waste management facility.") OR ("cash management capacity."))) OR ((("fire management contract.") OR ("risk management agencies."))))) OR ((("chain management issues.") OR ((("asset management control.") OR ("asset management contracts."))))))) OR ("debt management concepts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"waste management facility.\") or (\"cash management capacity.\"))) or (((\"fire management contract.\") or (\"risk management agencies.\"))))) or (((\"chain management issues.\") or (((\"asset management control.\") OR (\"asset management contracts.\"))))))) or (\"debt management concepts.\"))~".
• Removing quotes may allow a broader search: (((((((( waste management facility. ) or ( cash management capacity. ))) or ((( fire management contract. ) or ( risk management agencies. ))))) or ((( chain management issues. ) or ((( asset management control. ) OR ( asset management contracts. ))))))) or ( debt management concepts. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((((("waste management facility.") or ("cash management capacity."))) or ((("fire management contract.") or ("risk management agencies."))))) or ((("chain management issues.") or ((("asset management control.") OR ("asset management contracts."))))))) or ("debt management concepts."))*.