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