Perhaps you should try some spelling variations:
bulgeriae » bulgariae, bulgaricae, bulgaria
bulgar » bulgare, vulgar, bulger
bulgarien » bulgareien, vulgarien, bulgerien, bulgarian, bulgaria
bulgariaien » bulgareiaien, vulgariaien, bulgeriaien, bulgarian, bulgariae, bulgaristen
vulgare » vulgar, vulgaris, vulgarly

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: (bulgeriae OR ((bulgar OR vulgare) OR (bulgarien OR bulgariaien))).
• Adding a wildcard symbol may retrieve word variants: (bulgeriae or ((bulgar or vulgare) or (bulgarien or bulgariaien)))*.