Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoaa administration" » "publicaoaa administration" (Expand Search), "publicooaa administration" (Expand Search), "publicasoaa administration" (Expand Search), "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicoasaaas administracao" » "publicaoasaaas administracao" (Expand Search), "publicooasaaas administracao" (Expand Search), "publicasoasaaas 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 ((("publicoaa administration") OR ("publicoasaaas administracao"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoaa administration\") OR (\"publicoasaaas administracao\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoaa administration ) OR ( publicoasaaas administracao )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoaa administration") OR ("publicoasaaas administracao"))))*.