Perhaps you should try some spelling variations:
"vassal" » "vassals", "vassall", "vassil"
"vassils" » "vassilis", "vassals", "vassil"
"vassars" » "vassals", "vassar", "nassars"
"vassart" » "vassar", "massart", "assart"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ("vassal" OR ("vassils" OR ("vassars" OR "vassart"))).
• Removing quotes may allow a broader search: ( vassal or ( vassils or ( vassars or vassart ))).
• Adding a wildcard symbol may retrieve word variants: ("vassal" or ("vassils" or ("vassars" or "vassart")))*.