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)
"publicooaaas administration" » "publicaooaaas administration" (Expand Search), "publicoooaaas administration" (Expand Search), "publicasooaaas administration" (Expand Search), "publicooaaas administracao" (Expand Search)
"publicoos administration" » "publicaoos administration" (Expand Search), "publicooos administration" (Expand Search), "publicasoos administration" (Expand Search), "publicoos 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.

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