Perhaps you should try some spelling variations:
"reform management concepts." » "reform management contracts.", "farm management concepts.", "firm management concepts."
"land management contract." » "land management contracts."
"crisis management activity." » "crisis management activities.", "crisis management facility.", "crisis management authority.", "chain management activity.", "crisis management _ctivity."
"risk management activity." » "risk management activities.", "risk management facility.", "risk management authority.", "risk management _ctivity."
"care management control." » "care management contracts.", "case management control.", "fire management control.", "change management control."
"cash management water." » "cash management data.", "cash management based.", "cash management areas.", "asset management water."
"basin management case." » "chain management case.", "business management case.", "asset management case."
"cash management a." » "asset management a.", "cash 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: (((((("crisis management activity.") OR ("risk management activity."))) OR ((("care management control.") OR ((((((("cash management water.") OR ("cash management a."))) OR ("basin management case."))) OR ("land management contract."))))))) OR ("reform management concepts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"crisis management activity.\") OR (\"risk management activity.\"))) or (((\"care management control.\") or (((((((\"cash management water.\") or (\"cash management a.\"))) or (\"basin management case.\"))) or (\"land management contract.\"))))))) or (\"reform management concepts.\"))~".
• Removing quotes may allow a broader search: (((((( crisis management activity. ) OR ( risk management activity. ))) or ((( care management control. ) or ((((((( cash management water. ) or ( cash management a. ))) or ( basin management case. ))) or ( land management contract. ))))))) or ( reform management concepts. ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("crisis management activity.") OR ("risk management activity."))) or ((("care management control.") or ((((((("cash management water.") or ("cash management a."))) or ("basin management case."))) or ("land management contract."))))))) or ("reform management concepts."))*.