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