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