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