Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians
bulgaricae » bulgarische, bulgarian, bulgarie, bulgariane, bulgariene
bulgareeian » bulgarian, bulgarean, bulgarieeian, vulgareeian, bulgarieneian
bulgarica » bulgarisch, bulgarian, bulgarien
bulgare » bulgarie, vulgare, bulgarien
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 (bulgaricae OR (bulgareeian OR bulgarica))) OR (bulgare OR bulger)).
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgaria) or (bulgaricae or (bulgareeian or bulgarica))) or (bulgare or bulger))*.