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

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 revolta") OR ("clave revolua"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"slave revolt\") OR (\"save revolte\"))) OR (((\"clave revolta\") OR (\"clave revolua\"))))*".
• Removing quotes may allow a broader search: (((( slave revolt ) OR ( save revolte ))) OR ((( clave revolta ) OR ( clave revolua ))))*.