Perhaps you should try some spelling variations:
"reform management contractss." » "reform management contractors.", "reform management contract.", "reform management controls.", "farm management contractss."
"land management entity." » "land management energy.", "land management activity.", "land management quality."
"reform management contracts." » "farm management contracts."
"chain management control." » "cash management control."
"city management data." » "cash management data.", "data management data.", "case management data."
"city management case." » "cash management case.", "data management case.", "case management case."
"firm management a." » "farm management a.", "fire management a.", "care management a.", "firm 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: (((((("chain management control.") OR ("land management entity."))) OR ((((("city management data.") OR ("city management case."))) OR ("firm management a."))))) OR ((("reform management contractss.") OR ("reform management contracts."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"chain management control.\") or (\"land management entity.\"))) or (((((\"city management data.\") or (\"city management case.\"))) or (\"firm management a.\"))))) or (((\"reform management contractss.\") OR (\"reform management contracts.\"))))~".
• Removing quotes may allow a broader search: (((((( chain management control. ) or ( land management entity. ))) or ((((( city management data. ) or ( city management case. ))) or ( firm management a. ))))) or ((( reform management contractss. ) OR ( reform management contracts. ))))~.
• Adding a wildcard symbol may retrieve word variants: (((((("chain management control.") or ("land management entity."))) or ((((("city management data.") or ("city management case."))) or ("firm management a."))))) or ((("reform management contractss.") OR ("reform management contracts."))))*.