Perhaps you should try some spelling variations:
"land management concepts." » "land management contracts."
"crop management control." » "crop management contracts.", "cash management control.", "crisis management control.", "flood management control."
"chain management a." » "cash management a.", "chain management _."
"case management data." » "cash management data.", "waste management data.", "change management data."
"data management case." » "cash management case.", "bank management case.", "demand management case."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("case management data.") or ("crop management control."))) or ((((("chain management a.") or ((("debt management issues.") or ((("data management case.") or ("business management case."))))))) or ("asset management tools."))))) or ("land management concepts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("case management data.") OR ("crop management control."))) OR ((((("chain management a.") OR ((("debt management issues.") OR ((("data management case.") OR ("business management case."))))))) OR ("asset management tools."))))) OR ("land management concepts.")).
• Removing quotes may allow a broader search: (((((( case management data. ) or ( crop management control. ))) or ((((( chain management a. ) or ((( debt management issues. ) or ((( data management case. ) or ( business management case. ))))))) or ( asset management tools. ))))) or ( land management concepts. )).
• Adding a wildcard symbol may retrieve word variants: (((((("case management data.") or ("crop management control."))) or ((((("chain management a.") or ((("debt management issues.") or ((("data management case.") or ("business management case."))))))) or ("asset management tools."))))) or ("land management concepts."))*.