Perhaps you should try some spelling variations:
"vassal" » "vassil", "vassar", "vassallo"
"vassall" » "vassill", "vassarl", "vassallol", "hassall"
"vassals" » "vassils", "vassars", "vassallos", "vassilis"
"vassily" » "vasily", "vassil", "wassily"

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