Perhaps you should try some spelling variations:
"land management controls." » "land management control.", "land management contracts.", "land management contract."
"road management concepts." » "road management contracts.", "fund management concepts.", "demand management concepts.", "chain management concepts."
"farm management reviews." » "farm management overview.", "farm management reports.", "farm management reforms.", "cash management reviews.", "bank management reviews.", "forest management reviews."
"data management review." » "data management reform.", "debt management review.", "cash management review.", "bank management review."
"flood management water." » "fund management water.", "flood management case.", "flood management data.", "flood management based."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("farm management reviews.") or ("data management review."))) or ((((("flood management water.") or ("land management controls."))) or ("road management concepts."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("farm management reviews.") OR ("data management review."))) OR ((((("flood management water.") OR ("land management controls."))) OR ("road management concepts.")))).
• Removing quotes may allow a broader search: (((( farm management reviews. ) or ( data management review. ))) or ((((( flood management water. ) or ( land management controls. ))) or ( road management concepts. )))).
• Adding a wildcard symbol may retrieve word variants: (((("farm management reviews.") or ("data management review."))) or ((((("flood management water.") or ("land management controls."))) or ("road management concepts."))))*.