Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarie, vulgariae, bulgeriae, bulgariaiae
vulgari » vulgaris, vulgar, vulgare
bulgarian » bulgaria, hungarian, vulgarian, bulgerian, bulgariaian
bulgar » vulgar, bulger, bulgaria
bulgare » vulgare, bulgere, bulgariae, bulgarie, bulgarien

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: ((bulgaars OR ((bulgariae OR vulgari) OR bulgarian)) OR (bulgar OR bulgare)).
• Adding a wildcard symbol may retrieve word variants: ((bulgaars or ((bulgariae or vulgari) or bulgarian)) or (bulgar or bulgare))*.