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)
"publicooss administration" » "publicaooss administration" (Expand Search), "publicoooss administration" (Expand Search), "publicasooss administration" (Expand Search), "publicooss administracao" (Expand Search), "publicos administration" (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 ("publicooss administration"))) OR ("publicooos administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicooss administration\"))) OR (\"publicooos administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicooss administration ))) OR ( publicooos administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicooss administration"))) OR ("publicooos administration"))*.