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