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)
"publicooss administration" » "publicaooss administration" (Expand Search), "publicoooss administration" (Expand Search), "publicasooss administration" (Expand Search), "publicooss administracao" (Expand Search), "publicos administration" (Expand Search), "publicoss administration" (Expand Search), "publicass administration" (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 (\"publicooss administration\"))) OR (\"publicoos administration\"))~".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicooss administration ))) OR ( publicoos administration ))~.
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicooss administration"))) OR ("publicoos administration"))*.