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