Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicao administracao" » "publicaao administracao" (Expand Search), "publicoao administracao" (Expand Search), "publicasao administracao" (Expand Search), "publica administracao" (Expand Search), "publico administracao" (Expand Search), "publicas administracao" (Expand Search)
"publicaaao administration" » "publicaaaao administration" (Expand Search), "publicoaaao administration" (Expand Search), "publicasaaao 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 ((("publicao administracao") OR ("publicaaao administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicao administracao\") OR (\"publicaaao administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicao administracao ) OR ( publicaaao administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicao administracao") OR ("publicaaao administration"))))*.