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