Perhaps you should try some spelling variations:
"public administration" » "publica administration" (Expand Search), "publicas administration" (Expand Search), "publicos administration" (Expand Search), "public administracao" (Expand Search)
"publicosoosoos administration" » "publicaosoosoos administration" (Expand Search), "publicasosoosoos administration" (Expand Search), "publicososoosoos administration" (Expand Search), "publicosoosoos administracao" (Expand Search), "publicasoosoos administration" (Expand Search)
"publico administration" » "publicao administration" (Expand Search), "publicaso administration" (Expand Search), "publicoso administration" (Expand Search), "publico administracao" (Expand Search), "publica 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 ("publicosoosoos administration"))) OR ("publico administration"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"public administration\") OR (\"publicosoosoos administration\"))) OR (\"publico administration\"))".
• Removing quotes may allow a broader search: (((( public administration ) OR ( publicosoosoos administration ))) OR ( publico administration )).
• Adding a wildcard symbol may retrieve word variants: (((("public administration") OR ("publicosoosoos administration"))) OR ("publico administration"))*.