Perhaps you should try some spelling variations:
"demand management concepts." » "land management concepts.", "debt management concepts."
"reform management control." » "firm management control."
"reform management contracts." » "firm management contracts."
"fund management concepts." » "land management concepts."
"farm management control." » "cash management control.", "bank management control.", "data management control."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("fund management concepts.") or ("demand management concepts."))) or ((("farm management control.") or ((("reform management control.") OR ("reform management contracts."))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("fund management concepts.") OR ("demand management concepts."))) OR ((("farm management control.") OR ((("reform management control.") OR ("reform management contracts.")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"fund management concepts.\") or (\"demand management concepts.\"))) or (((\"farm management control.\") or (((\"reform management control.\") OR (\"reform management contracts.\"))))))".
• Removing quotes may allow a broader search: (((( fund management concepts. ) or ( demand management concepts. ))) or ((( farm management control. ) or ((( reform management control. ) OR ( reform management contracts. )))))).
• Adding a wildcard symbol may retrieve word variants: (((("fund management concepts.") or ("demand management concepts."))) or ((("farm management control.") or ((("reform management control.") OR ("reform management contracts."))))))*.