Perhaps you should try some spelling variations:
"land management concepts." » "land management contracts."
"cash management contract." » "cash management contracts.", "asset management contract."
"zone management control." » "zone management contracts.", "bank management control.", "change management control.", "asset management control."
"border management case." » "water management case.", "budget management case."
"basin management based." » "basin management board.", "basin management issues.", "basin management data.", "chain management based.", "business management based.", "crisis management based."
"case management case." » "change management case.", "asset management case.", "chain management case."
"demand management a." » "demand management _."
"debt management a." » "debt management _."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("waste management from.") or ((("zone management control.") or ((("border management case.") or ("case management case."))))))) or ((((((("demand management a.") OR ("debt management a."))) or ("basin management based."))) or ("cash management contract."))))) or ("land management concepts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("waste management from.") OR ((("zone management control.") OR ((("border management case.") OR ("case management case."))))))) OR ((((((("demand management a.") OR ("debt management a."))) OR ("basin management based."))) OR ("cash management contract."))))) OR ("land management concepts.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"waste management from.\") or (((\"zone management control.\") or (((\"border management case.\") or (\"case management case.\"))))))) or (((((((\"demand management a.\") OR (\"debt management a.\"))) or (\"basin management based.\"))) or (\"cash management contract.\"))))) or (\"land management concepts.\"))".
• Removing quotes may allow a broader search: (((((( waste management from. ) or ((( zone management control. ) or ((( border management case. ) or ( case management case. ))))))) or ((((((( demand management a. ) OR ( debt management a. ))) or ( basin management based. ))) or ( cash management contract. ))))) or ( land management concepts. )).
• Adding a wildcard symbol may retrieve word variants: (((((("waste management from.") or ((("zone management control.") or ((("border management case.") or ("case management case."))))))) or ((((((("demand management a.") OR ("debt management a."))) or ("basin management based."))) or ("cash management contract."))))) or ("land management concepts."))*.