Perhaps you should try some spelling variations:
"vassal" » "vassil", "vassallo"
"vassals" » "vassils", "vassallos", "vassilis"
"vassallos" » "vassillos", "vassallolos", "vassallo", "vassilios", "hassallos"
"vassall" » "vassill", "vassallol", "hassall"
"vassar" » "nassar"
"vassillos" » "vassilios", "vassillis", "vassilicos"

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 "vassar") OR ("vassals" OR ("vassallos" OR "vassillos"))) OR "vassall").
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((\"vassal\" or \"vassar\") or (\"vassals\" or (\"vassallos\" OR \"vassillos\"))) or \"vassall\")".
• Removing quotes may allow a broader search: ((( vassal or vassar ) or ( vassals or ( vassallos OR vassillos ))) or vassall ).
• Adding a wildcard symbol may retrieve word variants: ((("vassal" or "vassar") or ("vassals" or ("vassallos" OR "vassillos"))) or "vassall")*.