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