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