Perhaps you should try some spelling variations:
"publica administration" » "publica administracao" (Expand Search)
"publicas administration" » "publicas administracao" (Expand Search), "publico administration" (Expand Search)
"publicoosa administration" » "publicoosa administracao" (Expand Search), "publicos administration" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("publica administration") OR ("publicas administration"))) OR ("publicoosa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"publica administration\") OR (\"publicas administration\"))) OR (\"publicoosa administration\"))".
• Removing quotes may allow a broader search: (((( publica administration ) OR ( publicas administration ))) OR ( publicoosa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("publica administration") OR ("publicas administration"))) OR ("publicoosa administration"))*.