Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarian, bulgarians
bulgeriae » bulgaricae, bulgarian, bulweria
bulgarie » bulgarien, bulgarian, vulgaris
bulgariee » bulgariene, bulgariane, vulgarise, bulgarien, bulgariens, bulgaricae
bulgare » vulgare, bulgarien, vulgares

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 bulgeriae) OR ((bulgarie OR bulgaria) OR (bulgare OR bulgariee))).
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgeriae) or ((bulgarie or bulgaria) or (bulgare or bulgariee)))*.