Perhaps you should try some spelling variations:
"land management concepts." » "land management contracts."
"debt management contract." » "debt management contracts."
"waste management activity." » "waste management activities.", "waste management facility.", "waste management authority.", "waste management _ctivity."
"demand management controls." » "demand management contracts.", "demand management tools.", "demand management functions.", "demand management contractss."
"fire management control." » "fire management contracts.", "side management control.", "case management control.", "zone management control."
"crisis management case." » "chain management case."
"crisis management a." » "chain management a.", "crisis management _."
"cash management issues." » "asset management issues."
"risk management a." » "risk management _."

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 ((("crisis management a.") OR ("risk management a."))))) or ("waste management activity."))) or ((("fire management control.") or ("demand management controls."))))) or ((("cash 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 ((("crisis management a.") OR ("risk management a."))))) OR ("waste management activity."))) OR ((("fire management control.") OR ("demand management controls."))))) OR ((("cash 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 (((\"crisis management a.\") OR (\"risk management a.\"))))) or (\"waste management activity.\"))) or (((\"fire management control.\") or (\"demand management controls.\"))))) or (((\"cash management issues.\") or (\"debt management contract.\"))))) or (\"land management concepts.\"))*".
• Removing quotes may allow a broader search: (((((((((( crisis management case. ) or ((( crisis management a. ) OR ( risk management a. ))))) or ( waste management activity. ))) or ((( fire management control. ) or ( demand management controls. ))))) or ((( cash management issues. ) or ( debt management contract. ))))) or ( land management concepts. ))*.