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 issues." » "business management issues.", "crisis management issues.", "asset management issues."
"case management case." » "change management case.", "asset management case.", "bank management case."
"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 ("chain management case."))))))))) or ((((("debt management a.") or ("basin management issues."))) 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 ("chain management case."))))))))) OR ((((("debt management a.") OR ("basin management issues."))) 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 (\"chain management case.\"))))))))) or (((((\"debt management a.\") or (\"basin management issues.\"))) 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 ( chain management case. ))))))))) or ((((( debt management a. ) or ( basin management issues. ))) or ( cash management contract. ))))) or ( land management concepts. ))*.