Perhaps you should try some spelling variations:
bulgariae » bulgaria, bulgarians, bulgarien, vulgariae, bulgariaiae
bulgaricae » bulgarische, bulgaria, bulgarischen, bulgariae, bulgariene, vulgaricae, bulgariaicae
bulgarian » bulgaria, hungarian, vulgarian, bulgariaian
bulgarica » bulgaria, bulgarisch, bulgarien, vulgarica, bulgariaica
bulgar » vulgar, bulgaria
bulgarie » vulgarie, bulgariaie, bulgarien, bulgaria, vulgaris
bulgare » vulgare, bulgariae, bulgarien, bulgaria
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: ((bulgariae OR (bulgaricae OR (bulgarian OR bulgarica))) OR (((bulgar OR bulgarie) OR (bulgare OR bulgariae)) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or (bulgaricae or (bulgarian or bulgarica))) or (((bulgar or bulgarie) or (bulgare OR bulgariae)) or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or (bulgaricae or (bulgarian or bulgarica))) or (((bulgar or bulgarie) or (bulgare OR bulgariae)) or bulger))*.