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)
"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)
"publicoao administration" » "publicaoao administration" (Expand Search), "publicooao administration" (Expand Search), "publicasoao administration" (Expand Search), "publicoao administracao" (Expand Search), "publica administration" (Expand Search), "publico administration" (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 ("publicasa administration"))) OR ("publicoao administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicasa administration\"))) OR (\"publicoao administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicasa administration ))) OR ( publicoao administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicasa administration"))) OR ("publicoao administration"))*.