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