Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarie, bulgareiae, vulgariae, bulgariaiae
bulgariene » bulgarien, bulgariens, bulgarie, bulgareiene, vulgariene, bulgariaiene
bulgarian » bulgaria, bulgareian, vulgarian, bulgariaian
bulgarica » bulgaria, bulgarisch, bulgarien, bulgareica, vulgarica, bulgariaica
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 ((bulgariene OR bulgarian) OR (hungarian OR bulgarica))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or ((bulgariene or bulgarian) or (hungarian or bulgarica))) or (bulgar or bulger))*.