Perhaps you should try some spelling variations:
vassal » vassals, vassall, vassil
vassili » vassil, vassiliki, vassilios
vassilis » vassils, vassilikis, vassilioss
vassilioss » vassiloss, vassilikioss, vassiliososs, vassilios, vasilios, vassiliou
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 ( vassili OR ( vassilis OR vassilioss ))) OR vassart ).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( vassal or ( vassili or ( vassilis OR vassilioss ))) or vassart )".
• Adding a wildcard symbol may retrieve word variants: (( vassal or ( vassili or ( vassilis OR vassilioss ))) or vassart )*.