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)
"publicasa administration" » "publicaasa administration" (Expand Search), "publicoasa administration" (Expand Search), "publicasasa administration" (Expand Search), "publicasa administracao" (Expand Search), "publicas administration" (Expand Search), "publica administration" (Expand Search), "publicos administration" (Expand Search)
"publicossa administration" » "publicaossa administration" (Expand Search), "publicoossa administration" (Expand Search), "publicasossa administration" (Expand Search), "publicossa administracao" (Expand Search), "publicos administration" (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 (((\"publicasa administration\") OR (\"publicossa administration\"))))~".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicasa administration ) OR ( publicossa administration ))))~.
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicasa administration") OR ("publicossa administration"))))*.