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