Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicos administration" (Expand Search), "public administracao" (Expand Search)
"publicasa administration" » "publicaasa administration" (Expand Search), "publicoasa administration" (Expand Search), "publicosasa administration" (Expand Search), "publicasa administracao" (Expand Search), "publica administration" (Expand Search), "publicos administration" (Expand Search), "publicaa administration" (Expand Search), "publicoa administration" (Expand Search)
"publicas administration" » "publicaas administration" (Expand Search), "publicoas administration" (Expand Search), "publicosas administration" (Expand Search), "publicas administracao" (Expand Search), "publica administration" (Expand Search), "publico 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 (\"publicas administration\"))))~".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicasa administration ) OR ( publicas administration ))))~.
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicasa administration") OR ("publicas administration"))))*.