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)
"publicoa administration" » "publicaoa administration" (Expand Search), "publicooa administration" (Expand Search), "publicasoa administration" (Expand Search), "publica administration" (Expand Search), "publico 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 ("publicao administracao"))) OR ("publicoa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicao administracao\"))) OR (\"publicoa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicao administracao ))) OR ( publicoa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicao administracao"))) OR ("publicoa administration"))*.