Perhaps you should try some spelling variations:
bulgaars » bulgar
bulgare » vulgare, bulgaria, vulgares
vulgarien » bulgariens, vulgarisee, vulgarises
bulgerie » bulgariae, bulgaria, algerie, bulgeie, bulgesie
bulgarien » bulgarian, bulgaria, bulgariann, vulgarisn
bulgarie » bulgaria, bulgarian, vulgaris
bulger » bulge, bulges

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 vulgarien) OR (bulgerie OR bulgarien))) OR (bulgarie OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgaars or ((bulgare or vulgarien) or (bulgerie OR bulgarien))) or (bulgarie or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgaars or ((bulgare or vulgarien) or (bulgerie OR bulgarien))) or (bulgarie or bulger))*.