Perhaps you should try some spelling variations:
bulgare » vulgare, bulgaria, vulgares, bulgere, bulgariae
bulgarien » bulgarian, bulgaria, bulgariann, vulgarisn, vulgarien, bulgerien, bulgariaien
vulgarisn » vulgaris, vulgarise, vulgarisee
bulgerie » bulgariae, bulgaria, algerie
bulgarie » bulgaria, bulgarian, vulgaris, vulgarie, bulgerie, bulgariaie
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 (bulgarien OR vulgarisn)) OR (bulgerie OR bulgarie))) OR bulgar).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgaars or ((bulgare or (bulgarien OR vulgarisn)) or (bulgerie or bulgarie))) or bulgar)".
• Adding a wildcard symbol may retrieve word variants: ((bulgaars or ((bulgare or (bulgarien OR vulgarisn)) or (bulgerie or bulgarie))) or bulgar)*.