Perhaps you should try some spelling variations:
bulgare » bulgarie, bulgarien, vulgares, vulgare, bulgere, bulgariee
vulgare » vulgar, vulgarly
vulgaris » vulgar
bulgar » vulgar, bulger, bulgarie
bulgaria » vulgaria, bulgeria, bulgarieia

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