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)
"publicoasaa administration" » "publicaoasaa administration" (Expand Search), "publicooasaa administration" (Expand Search), "publicasoasaa administration" (Expand Search), "publicoasaa 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 ((("publicoasaa administration") OR ("publicaaas administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoasaa administration\") OR (\"publicaaas administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoasaa administration ) OR ( publicaaas administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoasaa administration") OR ("publicaaas administration"))))*.