Perhaps you should try some spelling variations:
"public administration" » "publico administration" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search), "public administracao" (Expand Search)
"publicoasa administration" » "publicooasa administration" (Expand Search), "publicasoasa administration" (Expand Search), "publicosoasa administration" (Expand Search), "publicoasa administracao" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search)
"publica administration" » "publicoa administration" (Expand Search), "publicasa administration" (Expand Search), "publicosa administration" (Expand Search), "publica administracao" (Expand Search)

You may be able to get more results by adjusting your search query.

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