Perhaps you should try some spelling variations:
"publica administration" » "publica administracao" (Expand Search)
"publicoaaas administration" » "publicoaaas administracao" (Expand Search)
"publicasaa administration" » "publicasaa administracao" (Expand Search), "publicas 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 ("publicoaaas administration"))) OR ("publicasaa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"publica administration\") OR (\"publicoaaas administration\"))) OR (\"publicasaa administration\"))".
• Removing quotes may allow a broader search: (((( publica administration ) OR ( publicoaaas administration ))) OR ( publicasaa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("publica administration") OR ("publicoaaas administration"))) OR ("publicasaa administration"))*.