Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"public administracao" » "publica administracao" (Expand Search), "publico administracao" (Expand Search), "publicas administracao" (Expand Search)
"publicaas administracao" » "publicaaas administracao" (Expand Search), "publicoaas administracao" (Expand Search), "publicasaas administracao" (Expand Search), "publicas administracao" (Expand Search), "publica administracao" (Expand Search), "publicos 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 ((("public administracao") OR ("publicaas administracao"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"public administracao\") OR (\"publicaas administracao\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( public administracao ) OR ( publicaas administracao )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("public administracao") OR ("publicaas administracao"))))*.