Perhaps you should try some spelling variations:
"demand management functions." » "demand management operations.", "demand management practices.", "demand management education."
"land management concepts." » "land management contracts."
"waste management facility." » "waste management capacity.", "waste management quality."
"debt management contract." » "debt management contracts."
"waste management activity." » "waste management activities.", "waste management authority.", "waste management action."
"fire management control." » "fire management contracts.", "side management control.", "case management control.", "zone management control."
"crisis management case." » "risk management case.", "cash management case.", "chain management case.", "crisis management a."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((((("crisis management case.") or ((("waste management activity.") OR ("waste management facility."))))) or ((("fire management control.") or ("demand management functions."))))) or ((("asset management issues.") or ("debt management contract."))))) or ("land management concepts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((("crisis management case.") OR ((("waste management activity.") OR ("waste management facility."))))) OR ((("fire management control.") OR ("demand management functions."))))) OR ((("asset management issues.") OR ("debt management contract."))))) OR ("land management concepts."))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"crisis management case.\") or (((\"waste management activity.\") OR (\"waste management facility.\"))))) or (((\"fire management control.\") or (\"demand management functions.\"))))) or (((\"asset management issues.\") or (\"debt management contract.\"))))) or (\"land management concepts.\"))*".
• Removing quotes may allow a broader search: (((((((( crisis management case. ) or ((( waste management activity. ) OR ( waste management facility. ))))) or ((( fire management control. ) or ( demand management functions. ))))) or ((( asset management issues. ) or ( debt management contract. ))))) or ( land management concepts. ))*.