Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians, bulgareiae, vulgariae
bulgaria » bulgareia, vulgaria
bulgar » bulgare, vulgar
bulgarie » bulgareie, vulgarie, bulgarien, bulgarian, vulgaris
vulgarly » vulgar, vulgaris
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 bulgaria) OR ((bulgar OR (bulgarie OR vulgarly)) OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgaria) or ((bulgar or (bulgarie or vulgarly)) or bulger))*.