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)
"publicaoaaa administration" » "publicaaoaaa administration" (Expand Search), "publicoaoaaa administration" (Expand Search), "publicasaoaaa administration" (Expand Search), "publicaoaaa administracao" (Expand Search)
"publicoaoas administration" » "publicaoaoas administration" (Expand Search), "publicooaoas administration" (Expand Search), "publicasoaoas administration" (Expand Search), "publicoaoas 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 ((("publicaoaaa administration") OR ("publicoaoas administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicaoaaa administration\") OR (\"publicoaoas administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicaoaaa administration ) OR ( publicoaoas administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicaoaaa administration") OR ("publicoaoas administration"))))*.