Perhaps you should try some spelling variations:
"land management activity." » "land management activities.", "land management facility.", "land management authority.", "land management _ctivity."
"reform management contract." » "reform management contracts.", "firm management contract."
"farm management contract." » "farm management contracts.", "bank management contract.", "data management contract.", "forest management contract."
"cash management control." » "cash management contracts.", "asset management control."
"land management quality." » "land management capacity."
"case management issues." » "case management case.", "change management issues.", "asset management issues.", "chain management issues."
"waste management data." » "debt management data.", "waste management case."
"fire management a." » "side management a.", "zone management a.", "city management a.", "fire management _."

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

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