Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, bulgareiae, vulgariae, bulgariaiae
bulgareiae » bulgaria, bulgarian, bulgarie, bulgareeiae, vulgareiae, bulgariaeiae
bulgarien » bulgarian, bulgaria, bulgareien, vulgarien, bulgariaien
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 bulgareiae) OR bulgarien) OR (bulgar OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgareiae) or bulgarien) or (bulgar OR bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgareiae) or bulgarien) or (bulgar OR bulger))*.