Perhaps you should try some spelling variations:
"estudios socio administracion general." » "estudios socio administrativo general." (Expand Search), "estudios socio administracion electoral." (Expand Search), "estudios socio administracion regional." (Expand Search), "estudios sobre administracion general." (Expand Search), "estudios serie administracion general." (Expand Search), "estudios como administracion general." (Expand Search), "estudios sociales administracion general." (Expand Search)
"estudios social administration general." » "estudios social administrativo general." (Expand Search), "estudios social administrativa general." (Expand Search), "estudios social administracion central." (Expand Search), "estudios local administration general." (Expand Search), "estudios judicial administration general." (Expand Search), "estudios special administrative general." (Expand Search), "estudios sociales administration general." (Expand Search), "estudios marcial administration general." (Expand Search), "estudio socio administration general." (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("estudios socio administracion general.") OR ("estudios social administration general."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"estudios socio administracion general.\") OR (\"estudios social administration general.\"))".
• Removing quotes may allow a broader search: (( estudios socio administracion general. ) OR ( estudios social administration general. )).
• Adding a wildcard symbol may retrieve word variants: (("estudios socio administracion general.") OR ("estudios social administration general."))*.