Perhaps you should try some spelling variations:
"case management controls." » "case management control.", "case management contract.", "case management tools.", "cash management controls.", "waste management controls.", "change management controls."
"crop management centers." » "crop management control.", "crop management water.", "crop management energy.", "cash management centers.", "crisis management centers.", "chain management centers."
"reform management concepts." » "firm management concepts."
"flood management contracts." » "land management contracts.", "fund management contracts."
"farm management reform." » "cash management reform.", "bank management reform.", "data management reform."
"road management data." » "land management data.", "fund management data.", "demand management data.", "road management a.", "road management case."

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("farm management reform.") OR ((((((("crop management centers.") OR ("case management controls."))) OR ("road management data."))) OR ((("flood management contracts.") OR ("reform management concepts."))))))~.
• Removing quotes may allow a broader search: (( farm management reform. ) or ((((((( crop management centers. ) or ( case management controls. ))) or ( road management data. ))) or ((( flood management contracts. ) or ( reform management concepts. ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("farm management reform.") or ((((((("crop management centers.") or ("case management controls."))) or ("road management data."))) or ((("flood management contracts.") or ("reform management concepts."))))))*.