Perhaps you should try some spelling variations:
"slave revolt" » "clave revolt", "llave revolt", "suave revolt", "slave revolta", "slave revolu", "slave revolut", "slave revelt", "slave evolt"
"save revolt" » "save revolta", "save revolu", "save revolut", "save revelt", "save evolt"
"save revolte" » "save revoltae", "save revolue", "save revolta", "save revolver", "save revolves", "save revolute", "save revelte", "save evolte"
"save revol" » "save revolu", "save revel", "save evol"

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