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)
"publicoasoaa administration" » "publicaoasoaa administration" (Expand Search), "publicooasoaa administration" (Expand Search), "publicasoasoaa administration" (Expand Search), "publicoasoaa administracao" (Expand Search)
"publicaaas administration" » "publicaaaas administration" (Expand Search), "publicoaaas administration" (Expand Search), "publicasaaas administration" (Expand Search), "publicaaas 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: (("public administration") OR ((("publicoasoaa administration") OR ("publicaaas administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoasoaa administration\") OR (\"publicaaas administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoasoaa administration ) OR ( publicaaas administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoasoaa administration") OR ("publicaaas administration"))))*.