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)
"publicos administration" » "publicaos administration" (Expand Search), "publicoos administration" (Expand Search), "publicasos administration" (Expand Search), "publicos administracao" (Expand Search), "publico administration" (Expand Search), "publicas administration" (Expand Search), "publica administration" (Expand Search)
"publicaasa administration" » "publicaaasa administration" (Expand Search), "publicoaasa administration" (Expand Search), "publicasaasa administration" (Expand Search), "publicaasa administracao" (Expand Search), "publicas administration" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicos administration\"))) OR (\"publicaasa administration\"))~".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicos administration ))) OR ( publicaasa administration ))~.
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicos administration"))) OR ("publicaasa administration"))*.