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)
"publicoaaas administration" » "publicaoaaas administration" (Expand Search), "publicooaaas administration" (Expand Search), "publicasoaaas administration" (Expand Search), "publicoaaas administracao" (Expand Search)
"publicaosa administration" » "publicaaosa administration" (Expand Search), "publicoaosa administration" (Expand Search), "publicasaosa administration" (Expand Search), "publicaosa administracao" (Expand Search), "publicas 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 ("publicoaaas administration"))) OR ("publicaosa administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicoaaas administration\"))) OR (\"publicaosa administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicoaaas administration ))) OR ( publicaosa administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicoaaas administration"))) OR ("publicaosa administration"))*.