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)
"publicooos administration" » "publicaooos administration" (Expand Search), "publicoooos administration" (Expand Search), "publicasooos administration" (Expand Search), "publicooos administracao" (Expand Search), "publicos administration" (Expand Search)
"publicao administration" » "publicaao administration" (Expand Search), "publicoao administration" (Expand Search), "publicasao administration" (Expand Search), "publicao administracao" (Expand Search), "publica 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 (\"publicooos administration\"))) OR (\"publicao administration\"))~".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicooos administration ))) OR ( publicao administration ))~.
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicooos administration"))) OR ("publicao administration"))*.