Perhaps you should try some spelling variations:
bulgare » bulgarie, bulgarien, vulgares
bulgareian » bulgarieian, bulgarienian, vulgaresian, bulgarian, bulgarean, bulgarien
vulgare » vulgar, vulgaris, vulgarly
bulgarica » bulgarisch, bulgarian, bulgarien

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