Perhaps you should try some spelling variations:
"flood management activity." » "flood management activities.", "flood management facility.", "flood management authority.", "land management activity.", "fund management activity."
"reform management tools." » "farm management tools.", "firm management tools."
"bank management control." » "basin management control.", "demand management control.", "change management control."
"city management case." » "case management case.", "crop management case.", "security management case.", "city management a."
"data management case." » "data management a.", "demand management case.", "chain management case.", "basin management case."
"cash management how." » "asset management how.", "cash management from.", "cash management _.", "cash management a."

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: (((((((((("bank management control.") OR ("risk management control."))) OR ("debt management contracts."))) OR ("flood management activity."))) OR ((((("city management case.") OR ("data management case."))) OR ("cash management how."))))) OR ("reform management tools."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((((\"bank management control.\") OR (\"risk management control.\"))) or (\"debt management contracts.\"))) or (\"flood management activity.\"))) or (((((\"city management case.\") or (\"data management case.\"))) or (\"cash management how.\"))))) or (\"reform management tools.\"))~".
• Removing quotes may allow a broader search: (((((((((( bank management control. ) OR ( risk management control. ))) or ( debt management contracts. ))) or ( flood management activity. ))) or ((((( city management case. ) or ( data management case. ))) or ( cash management how. ))))) or ( reform management tools. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((((((("bank management control.") OR ("risk management control."))) or ("debt management contracts."))) or ("flood management activity."))) or ((((("city management case.") or ("data management case."))) or ("cash management how."))))) or ("reform management tools."))*.