Perhaps you should try some spelling variations:
bulgare » bulgarie, vulgare, bulgaria, bulgere, bulgariae
bulgareien » bulgarieien, vulgareien, bulgariaien, bulgarian, bulgarie, bulgariens, bulgereien, bulgariaeien
bulgariae » bulgaricae, bulgaria, bulgarian, vulgariae, bulgeriae, bulgariaiae
bulgarien » bulgarian, bulgaria, vulgarien, bulgerien, bulgariaien
vulgarien » bulgariens, vulgarisee, vulgarises
vulgaris » bulgaria, vulgar
bulgar » vulgar, bulger, bulgaria

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• Removing quotes may allow a broader search: ((bulgare or ((bulgariae or ((bulgarien or bulgareien) or vulgarien)) or vulgaris)) or bulgar).