Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicooos administration" » "publicaooos administration" (Expand Search), "publicoooos administration" (Expand Search), "publicasooos administration" (Expand Search), "publicos 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)

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 ("publicooos administration"))) OR ("publicao administracao"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicooos administration\"))) OR (\"publicao administracao\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicooos administration ))) OR ( publicao administracao )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicooos administration"))) OR ("publicao administracao"))*.