Perhaps you should try some spelling variations:
"publico administration" » "publica administration" (Expand Search), "publico administracao" (Expand Search)
"publicoosas administration" » "publicaosas administration" (Expand Search), "publicoosas administracao" (Expand Search)
"publicaaa administration" » "publicaaa administracao" (Expand Search), "publica 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: "((((\"publico administration\") OR (\"publicoosas administration\"))) OR (\"publicaaa administration\"))~".
• Removing quotes may allow a broader search: (((( publico administration ) OR ( publicoosas administration ))) OR ( publicaaa administration ))~.
• Adding a wildcard symbol may retrieve word variants: (((("publico administration") OR ("publicoosas administration"))) OR ("publicaaa administration"))*.