Perhaps you should try some spelling variations:
"land management controls." » "land management control.", "land management contracts.", "land management contract."
"oxford management reviews." » "oxford management review.", "oxford management overview.", "oxford management reports.", "reform management reviews.", "records management reviews.", "fund management reviews."
"land management centers." » "land management concepts.", "land management control.", "land management water."
"oxford management reform." » "reform management reform.", "records management reform.", "fund management reform."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("oxford management reviews.") or ("oxford management reform."))) or ((("land management centers.") OR ("land management controls."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford management reviews.") OR ("oxford management reform."))) OR ((("land management centers.") OR ("land management controls."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"oxford management reviews.\") or (\"oxford management reform.\"))) or (((\"land management centers.\") OR (\"land management controls.\"))))*".
• Removing quotes may allow a broader search: (((( oxford management reviews. ) or ( oxford management reform. ))) or ((( land management centers. ) OR ( land management controls. ))))*.