Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarians, bulgarien, bulgareiae
bulgaricae » bulgarica, bulgarische, bulgarian, bulgareicae
bulgar » bulgare
bulgarie » bulgareie, bulgarien, bulgarian, vulgaris
bulgaria » bulgareia
vulgare » vulgaris, vulgarly
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 bulgaricae) OR (((bulgar OR vulgar) OR (bulgarie OR (vulgare OR bulgaria))) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or bulgaricae) or (((bulgar OR vulgar) or (bulgarie or (vulgare or bulgaria))) or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or bulgaricae) or (((bulgar OR vulgar) or (bulgarie or (vulgare or bulgaria))) or bulger))*.