Perhaps you should try some spelling variations:
"slave revolt" » "clave revolt", "llave revolt", "suave revolt", "slave revolta", "slave revolte", "slave revolu", "slave revolut", "slave revelt", "slave resolt", "slave rvolt", "slave revilt", "slave revot"
"save revelt" » "save revela", "save revel", "save revell"
"save revol" » "save revolu", "save revel", "save resol", "save rvol", "save revil", "save revo"
"save evol" » "save vol", "save evil", "save evo"

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