Perhaps you should try some spelling variations:
"case management authority." » "case management quality.", "cash management authority.", "waste management authority.", "change management authority.", "case management _uthority."
"basin management contracts." » "basin management controls.", "cash management contracts.", "chain management contracts.", "business management contracts."
"reform management contract." » "reform management control.", "farm management contract."
"firm management contract." » "firm management control.", "farm management contract.", "fire management contract.", "care management contract."
"city management energy." » "city management entity.", "city management centers.", "city management agency.", "cash management energy.", "data management energy.", "crop management energy."
"flood management a." » "land management a.", "fund management a.", "flood management _."
"flood management case." » "land management case.", "fund management case."
"side management concepts." » "zone management concepts.", "service management concepts.", "budget management concepts."

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: (((((("basin management contracts.") OR ((("flood management a.") OR ("flood management case."))))) OR ((((("city management energy.") OR ("case management authority."))) OR ("side management concepts."))))) OR ((("reform management contract.") OR ("firm management contract."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"basin management contracts.\") or (((\"flood management a.\") or (\"flood management case.\"))))) or (((((\"city management energy.\") or (\"case management authority.\"))) or (\"side management concepts.\"))))) or (((\"reform management contract.\") OR (\"firm management contract.\"))))~".
• Removing quotes may allow a broader search: (((((( basin management contracts. ) or ((( flood management a. ) or ( flood management case. ))))) or ((((( city management energy. ) or ( case management authority. ))) or ( side management concepts. ))))) or ((( reform management contract. ) OR ( firm management contract. ))))~.
• Adding a wildcard symbol may retrieve word variants: (((((("basin management contracts.") or ((("flood management a.") or ("flood management case."))))) or ((((("city management energy.") or ("case management authority."))) or ("side management concepts."))))) or ((("reform management contract.") OR ("firm management contract."))))*.