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