Perhaps you should try some spelling variations:
"city management controls." » "city management contract.", "city management functions.", "city management protocols.", "data management controls.", "case management controls.", "crop management controls."
"farm management entity." » "farm management energy.", "farm management activity.", "farm management quality.", "bank management entity.", "data management entity.", "forest management entity."
"reform management control." » "firm management control."
"asset management concepts." » "debt management concepts."
"city management tools." » "data management tools.", "case management tools.", "crop management tools."
"fire management contracts." » "side management contracts.", "case management contracts.", "zone management contracts."

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

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