Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search)
"publicasasa administration" » "publicaasasa administration" (Expand Search), "publicoasasa administration" (Expand Search), "publicasasasa administration" (Expand Search)
"publicoos administracao" » "publicaoos administracao" (Expand Search), "publicooos administracao" (Expand Search), "publicasoos administracao" (Expand Search), "publicos administracao" (Expand Search), "publico administracao" (Expand Search), "publicas 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 ((("publicasasa administration") OR ("publicoos administracao"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicasasa administration\") OR (\"publicoos administracao\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicasasa administration ) OR ( publicoos administracao )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicasasa administration") OR ("publicoos administracao"))))*.