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)
"publicoaaasa administration" » "publicaoaaasa administration" (Expand Search), "publicooaaasa administration" (Expand Search), "publicasoaaasa administration" (Expand Search), "publicoaaasa administracao" (Expand Search)
"publicooos administration" » "publicaooos administration" (Expand Search), "publicoooos administration" (Expand Search), "publicasooos administration" (Expand Search), "publicooos administracao" (Expand Search), "publicos 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 ((("publicoaaasa administration") OR ("publicooos administration"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public administration\") OR (((\"publicoaaasa administration\") OR (\"publicooos administration\"))))".
• Removing quotes may allow a broader search: (( public administration ) OR ((( publicoaaasa administration ) OR ( publicooos administration )))).
• Adding a wildcard symbol may retrieve word variants: (("public administration") OR ((("publicoaaasa administration") OR ("publicooos administration"))))*.