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)
"publicaaooos administration" » "publicaaaooos administration" (Expand Search), "publicoaaooos administration" (Expand Search), "publicasaaooos administration" (Expand Search), "publicaaooos administracao" (Expand Search)
"publicasa administration" » "publicaasa administration" (Expand Search), "publicoasa administration" (Expand Search), "publicasasa administration" (Expand Search), "publicasa administracao" (Expand Search), "publicas administration" (Expand Search), "publica administration" (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 ("publicaaooos administration"))) OR ("publicasa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicaaooos administration\"))) OR (\"publicasa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicaaooos administration ))) OR ( publicasa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicaaooos administration"))) OR ("publicasa administration"))*.