Perhaps you should try some spelling variations:
"clave revuelta" » "la revuelta"
"slave revolt" » "llave revolt", "suave revolt", "lave revolt", "slave revolta", "slave revol", "slave revolu"
"save revolte" » "save revoltae", "save revole", "save revolue", "save revolta", "save revolver", "save revolves"
"clave revolua" » "clave revolta", "clave revalua", "clave revolu"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("slave revolt") OR ("save revolte"))) OR ((("clave revuelta") OR ("clave revolua"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"slave revolt\") OR (\"save revolte\"))) OR (((\"clave revuelta\") OR (\"clave revolua\"))))*".
• Removing quotes may allow a broader search: (((( slave revolt ) OR ( save revolte ))) OR ((( clave revuelta ) OR ( clave revolua ))))*.