Perhaps you should try some spelling variations:
"waste management controls." » "waste management control.", "waste management contract.", "waste management tools.", "debt management controls."
"demand management data." » "debt management data.", "demand management a.", "demand management case."
"reform management concepts." » "firm management concepts."
"cash management water." » "cash management case.", "cash management based.", "cash management a.", "asset management water."
"farm management reform." » "bank management reform.", "data management reform.", "forest management reform."
"road management data." » "flood management data.", "chain management data.", "road management a.", "road management case."
"fund management data." » "fund management a.", "fund 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 ((((((("cash management water.") OR ("waste management controls."))) OR ((("road management data.") OR ((("fund management data.") OR ("demand management data."))))))) OR ((("land management contracts.") OR ("reform management concepts."))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"farm management reform.\") or (((((((\"cash management water.\") or (\"waste management controls.\"))) or (((\"road management data.\") or (((\"fund management data.\") OR (\"demand management data.\"))))))) or (((\"land management contracts.\") or (\"reform management concepts.\"))))))~".
• Removing quotes may allow a broader search: (( farm management reform. ) or ((((((( cash management water. ) or ( waste management controls. ))) or ((( road management data. ) or ((( fund management data. ) OR ( demand management data. ))))))) or ((( land management contracts. ) or ( reform management concepts. ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("farm management reform.") or ((((((("cash management water.") or ("waste management controls."))) or ((("road management data.") or ((("fund management data.") OR ("demand management data."))))))) or ((("land management contracts.") or ("reform management concepts."))))))*.