Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoas administration" » "publicaoas administration" (Expand Search), "publicooas administration" (Expand Search), "publicasoas administration" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search), "publica administration" (Expand Search)
"publicaoosas administracao" » "publicaaoosas administracao" (Expand Search), "publicoaoosas administracao" (Expand Search), "publicasaoosas administracao" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("public administration") OR ((("publicoas administration") OR ("publicaoosas administracao"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoas administration\") OR (\"publicaoosas administracao\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoas administration ) OR ( publicaoosas administracao )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoas administration") OR ("publicaoosas administracao"))))*.