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