Perhaps you should try some spelling variations:
vulgare » vulgar, vulgaris, vulgarly
bulgarien » bulgaria, bulgareien, vulgarien, bulgerien
bulgariens » bulgarias, bulgarie, bulgareiens, vulgariens, bulgeriens
bulgarian » bulgaria, hungarian, bulgareian, vulgarian, bulgerian
bulgar » bulgare, vulgar, bulger

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: ((vulgare OR (bulgarien OR (bulgariens OR bulgarian))) OR bulgar).
• Adding a wildcard symbol may retrieve word variants: ((vulgare or (bulgarien or (bulgariens or bulgarian))) or bulgar)*.