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."
"debt management contract." » "debt management contracts."
"fire management control." » "fire management contracts.", "side management control.", "case management control.", "city management control."
"zone management control." » "zone management contracts.", "bank management control.", "case management control.", "change management control."
"chain management case." » "chain management a."
"cash management issues." » "asset management issues."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((((("chain management case.") or ("waste management activities."))) or ((((("fire management control.") OR ("zone management control."))) or ("demand management functions."))))) 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: (((((((("chain management case.") OR ("waste management activities."))) OR ((((("fire management control.") OR ("zone management control."))) OR ("demand management functions."))))) 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: "((((((((\"chain management case.\") or (\"waste management activities.\"))) or (((((\"fire management control.\") OR (\"zone management control.\"))) or (\"demand management functions.\"))))) or (((\"cash management issues.\") or (\"debt management contract.\"))))) or (\"land management concepts.\"))*".
• Removing quotes may allow a broader search: (((((((( chain management case. ) or ( waste management activities. ))) or ((((( fire management control. ) OR ( zone management control. ))) or ( demand management functions. ))))) or ((( cash management issues. ) or ( debt management contract. ))))) or ( land management concepts. ))*.