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