Perhaps you should try some spelling variations:
"land management centers." » "land management controls.", "land management water.", "land management energy."
"reform management a." » "firm management a.", "reform management _."
"demand management data." » "debt management data.", "demand management case."
"road management review." » "chain management review."
"farm management contracts." » "cash management contracts.", "bank management contracts.", "data management contracts."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("road management review.") or ("fund management reform."))) or ((((((("farm management contracts.") or ((("land management centers.") OR ("land management control."))))) or ((("reform management a.") or ("demand management data."))))) or ("flood management concepts."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("road management review.") OR ("fund management reform."))) OR ((((((("farm management contracts.") OR ((("land management centers.") OR ("land management control."))))) OR ((("reform management a.") OR ("demand management data."))))) OR ("flood management concepts."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"road management review.\") or (\"fund management reform.\"))) or (((((((\"farm management contracts.\") or (((\"land management centers.\") OR (\"land management control.\"))))) or (((\"reform management a.\") or (\"demand management data.\"))))) or (\"flood management concepts.\"))))*".
• Removing quotes may allow a broader search: (((( road management review. ) or ( fund management reform. ))) or ((((((( farm management contracts. ) or ((( land management centers. ) OR ( land management control. ))))) or ((( reform management a. ) or ( demand management data. ))))) or ( flood management concepts. ))))*.