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