Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarie, vulgariae, bulgarieiae
bulgaria » vulgaria, bulgarieia
bulgar » vulgar, bulgarie
bulgare » vulgare, bulgariee, bulgarie, bulgarien
bulger » bulge, bulges
bulgere » bulgee, bulgese, bilgere, burgere, bulgarie

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: ((bulgaria OR bulgariae) OR ((bulgar OR bulger) OR (bulgare OR bulgere))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgaria or bulgariae) or ((bulgar OR bulger) or (bulgare or bulgere)))".
• Adding a wildcard symbol may retrieve word variants: ((bulgaria or bulgariae) or ((bulgar OR bulger) or (bulgare or bulgere)))*.