Perhaps you should try some spelling variations:
"risk management control." » "risk management contracts."
"basin management control." » "basin management contracts.", "cash management control.", "chain management control.", "business management control."
"flood management energy." » "flood management entity.", "flood management centers.", "flood management agency.", "land management energy.", "fund management energy."
"reform management tools." » "farm management tools."
"asset management case." » "debt management case."
"firm management a." » "farm management a.", "fire management a.", "care management a.", "firm management _."
"city management a." » "cash management a.", "data management a.", "case management a.", "city 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: (((((((("risk management control.") OR ("basin management control."))) OR ("flood management energy."))) OR ((((("firm management a.") OR ("city management a."))) OR ("asset management case."))))) OR ("reform management tools."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"risk management control.\") or (\"basin management control.\"))) or (\"flood management energy.\"))) or (((((\"firm management a.\") OR (\"city management a.\"))) or (\"asset management case.\"))))) or (\"reform management tools.\"))~".
• Removing quotes may allow a broader search: (((((((( risk management control. ) or ( basin management control. ))) or ( flood management energy. ))) or ((((( firm management a. ) OR ( city management a. ))) or ( asset management case. ))))) or ( reform management tools. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((((("risk management control.") or ("basin management control."))) or ("flood management energy."))) or ((((("firm management a.") OR ("city management a."))) or ("asset management case."))))) or ("reform management tools."))*.