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)
"publicasaos administration" » "publicaasaos administration" (Expand Search), "publicoasaos administration" (Expand Search), "publicasasaos administration" (Expand Search), "publicasaos administracao" (Expand Search)
"publicoso administration" » "publicaoso administration" (Expand Search), "publicooso administration" (Expand Search), "publicasoso administration" (Expand Search), "publicoso administracao" (Expand Search), "publicos 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 ("publicasaos administration"))) OR ("publicoso administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicasaos administration\"))) OR (\"publicoso administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicasaos administration ))) OR ( publicoso administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicasaos administration"))) OR ("publicoso administration"))*.