Perhaps you should try some spelling variations:
bulgare » bulgarie, vulgare, vulgares, bulgariee
bulgarien » bulgarian, vulgarien, bulgarieien
vulgarien » bulgariens, vulgarisee, vulgarises
bulgaria » vulgaria, bulgarieia
bulgar » vulgar, bulgarie
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: ((bulgare OR (bulgaria OR (bulgarien OR vulgarien))) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgare or (bulgaria or (bulgarien or vulgarien))) or (bulgar OR bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgare or (bulgaria or (bulgarien or vulgarien))) or (bulgar OR bulger))*.