Perhaps you should try some spelling variations:
"demand management energy." » "demand management entity.", "demand management centers.", "demand management agency."
"basin management case." » "chain management case.", "business management case.", "crisis management case.", "basin management a."
"fire management control." » "side management control.", "case management control.", "zone management control."
"cash management issues." » "asset management issues."

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: (((((((("basin management case.") OR ("waste management activities."))) OR ((("fire management control.") OR ("demand management energy."))))) OR ((("cash management issues.") OR ((("debt management contract.") OR ("debt management contracts."))))))) OR ("land management concepts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"basin management case.\") or (\"waste management activities.\"))) or (((\"fire management control.\") or (\"demand management energy.\"))))) or (((\"cash management issues.\") or (((\"debt management contract.\") OR (\"debt management contracts.\"))))))) or (\"land management concepts.\"))~".
• Removing quotes may allow a broader search: (((((((( basin management case. ) or ( waste management activities. ))) or ((( fire management control. ) or ( demand management energy. ))))) or ((( cash management issues. ) or ((( debt management contract. ) OR ( debt management contracts. ))))))) or ( land management concepts. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((((("basin management case.") or ("waste management activities."))) or ((("fire management control.") or ("demand management energy."))))) or ((("cash management issues.") or ((("debt management contract.") OR ("debt management contracts."))))))) or ("land management concepts."))*.