Perhaps you should try some spelling variations:
bulgare » bulgarie, bulgaria, vulgares, vulgare, bulgere, bulgariae
vulgare » vulgar, vulgarly
bulgarien » bulgarian, bulgaria, vulgarien, bulgerien, bulgariaien
vulgarien » bulgariens, vulgarisee, vulgarises
vulgaris » bulgaria, vulgar
bulgar » vulgar, bulger, bulgaria

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: (((bulgaars OR bulgare) OR ((vulgare OR (bulgarien OR vulgarien)) OR vulgaris)) OR bulgar).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgaars OR bulgare) or ((vulgare or (bulgarien or vulgarien)) or vulgaris)) or bulgar)".
• Adding a wildcard symbol may retrieve word variants: (((bulgaars OR bulgare) or ((vulgare or (bulgarien or vulgarien)) or vulgaris)) or bulgar)*.