Perhaps you should try some spelling variations:
"reform management controls." » "reform management control.", "reform management contract.", "reform management tools.", "farm management controls.", "firm management controls."
"waste management activity." » "waste management activities.", "waste management facility.", "waste management authority.", "debt management activity."
"city management energy." » "city management centers.", "city management agency.", "cash management energy.", "data management energy.", "case management energy."
"waste management entity." » "waste management quality.", "waste management centers.", "waste management action.", "debt management entity."
"basin management contracts." » "cash management contracts.", "chain management contracts.", "business management contracts."
"flood management water." » "flood management data.", "flood management based.", "flood management a.", "land management water.", "fund management water."
"flood management case." » "land management case.", "fund management case.", "flood management a."
"side management concepts." » "case management concepts.", "zone management concepts.", "service 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 water.") OR ("flood management case."))))) OR ((((("city management energy.") OR ((("waste management entity.") OR ("waste management activity."))))) OR ("side management concepts."))))) OR ("reform management controls."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"basin management contracts.\") or (((\"flood management water.\") or (\"flood management case.\"))))) or (((((\"city management energy.\") or (((\"waste management entity.\") OR (\"waste management activity.\"))))) or (\"side management concepts.\"))))) or (\"reform management controls.\"))~".
• Removing quotes may allow a broader search: (((((( basin management contracts. ) or ((( flood management water. ) or ( flood management case. ))))) or ((((( city management energy. ) or ((( waste management entity. ) OR ( waste management activity. ))))) or ( side management concepts. ))))) or ( reform management controls. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("basin management contracts.") or ((("flood management water.") or ("flood management case."))))) or ((((("city management energy.") or ((("waste management entity.") OR ("waste management activity."))))) or ("side management concepts."))))) or ("reform management controls."))*.