Perhaps you should try some spelling variations:
"slave revolt" » "clave revolt", "save revolt", "llave revolt", "slave revolu"
"slave revolta" » "clave revolta", "save revolta", "llave revolta", "slave revolua", "slave revuelta"
"slave rivolta" » "clave rivolta", "save rivolta", "llave rivolta"
"slave revueltas" » "clave revueltas", "save revueltas", "llave revueltas", "slave resueltas", "slave revuelta", "slave vueltas"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"slave revolt\") OR (((((\"slave revolta\") OR (\"slave rivolta\"))) OR (\"slave revueltas\"))))~".
• Removing quotes may allow a broader search: (( slave revolt ) OR ((((( slave revolta ) OR ( slave rivolta ))) OR ( slave revueltas ))))~.
• Adding a wildcard symbol may retrieve word variants: (("slave revolt") OR ((((("slave revolta") OR ("slave rivolta"))) OR ("slave revueltas"))))*.