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