Perhaps you should try some spelling variations:
"slave revolt" » "slave revolu", "slave revolut", "slave revelt", "slave evolt"
"slave revolta" » "slave revolua", "slave rivolta", "slave revuelta", "slave travolta", "slave revoluta", "slave revelta", "slave evolta"
"save revolte" » "save revolue", "save revolute", "save revelte", "save evolte", "save revolver", "save revolves"
"slave revol" » "slave revolu", "slave revel", "slave 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 ("slave revolta"))) OR ("slave revol"))) OR ("save revolte"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"slave revolt\") OR (\"slave revolta\"))) OR (\"slave revol\"))) OR (\"save revolte\"))".
• Removing quotes may allow a broader search: (((((( slave revolt ) OR ( slave revolta ))) OR ( slave revol ))) OR ( save revolte )).
• Adding a wildcard symbol may retrieve word variants: (((((("slave revolt") OR ("slave revolta"))) OR ("slave revol"))) OR ("save revolte"))*.