Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarians, bulgarien
bulgareia » bulgariia, bulgares, bulgarin, vulgareia, bulgarienia, vulgaresia
bulgarie » bulgarien, vulgaris, vulgare
bulgarian » hungarian
bulgarica » bulgarisch, bulgarien
bulgare » vulgare, bulgarien, vulgares
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 bulgareia)) OR (bulgarie OR (bulgarian OR bulgarica))) OR (bulgare OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or (bulgaria or bulgareia)) or (bulgarie or (bulgarian or bulgarica))) or (bulgare or bulger))*.