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