也许你应该尝试一些拼写变化:
"public administration" » "publica administration" (扩展搜索), "publico administration" (扩展搜索), "publicas administration" (扩展搜索), "public administracao" (扩展搜索)
"publicos administration" » "publicaos administration" (扩展搜索), "publicoos administration" (扩展搜索), "publicasos administration" (扩展搜索), "publicos administracao" (扩展搜索), "publico administration" (扩展搜索), "publicas administration" (扩展搜索), "publica administration" (扩展搜索)
"publicaas administration" » "publicaaas administration" (扩展搜索), "publicoaas administration" (扩展搜索), "publicasaas administration" (扩展搜索), "publicaas administracao" (扩展搜索), "publicas administration" (扩展搜索), "publica administration" (扩展搜索)

Você pode obter mais resultados ajustando o argumento de busca.

• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "((((\"public administration\") OR (\"publicos administration\"))) OR (\"publicaas administration\"))~".
• Remover as aspas pode possibilitar buscas mais amplas: (((( public administration ) OR ( publicos administration ))) OR ( publicaas administration ))~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (((("public administration") OR ("publicos administration"))) OR ("publicaas administration"))*.