Perhaps you should try some spelling variations:
"vassal" » "vassil", "vassar", "vassallo"
"vassall" » "vassill", "vassarl", "vassallol", "hassall"
"vassals" » "vassils", "vassars", "vassallos", "vassilis"
"vassalls" » "vassills", "vassarls", "vassallols", "hassalls", "vassallos", "vassallo", "vassalos"
"vassill" » "vassil", "vassili", "vassily"

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