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