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