Perhaps you should try some spelling variations:
"reform management controls." » "reform management control.", "reform management contract.", "reform management tools."
"firm management water." » "firm management based.", "firm management areas.", "firm management work.", "fire management water.", "city management water.", "care management water."
"flood management data." » "fund management data."
"cash management contracts." » "asset management contracts."
"farm management concepts." » "bank management concepts.", "data management concepts.", "forest management concepts."
"land management a." » "land management _."

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: (((((("cash management contracts.") OR ((("flood management data.") OR ((("land management case.") OR ("land management a."))))))) OR ((("firm management water.") OR ("farm management concepts."))))) OR ("reform management controls."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"cash management contracts.\") or (((\"flood management data.\") or (((\"land management case.\") OR (\"land management a.\"))))))) or (((\"firm management water.\") or (\"farm management concepts.\"))))) or (\"reform management controls.\"))~".
• Removing quotes may allow a broader search: (((((( cash management contracts. ) or ((( flood management data. ) or ((( land management case. ) OR ( land management a. ))))))) or ((( firm management water. ) or ( farm management concepts. ))))) or ( reform management controls. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("cash management contracts.") or ((("flood management data.") or ((("land management case.") OR ("land management a."))))))) or ((("firm management water.") or ("farm management concepts."))))) or ("reform management controls."))*.