Perhaps you should try some spelling variations:
bulgarian » hungarian, bulgareian, vulgarian
bulgarie » bulgarien, vulgaris, vulgare, bulgareie, vulgarie
vulgarian » bulgarians, vulgaridad, hungarian
bulgarisch » bulgarische, bulgarischen, bulgareisch, vulgarisch
bulgaria » bulgareia, vulgaria
bulgar » bulgare, vulgar
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: ((bulgarian OR (bulgarie OR (vulgarian OR (bulgarisch OR bulgaria)))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((bulgarian or (bulgarie or (vulgarian or (bulgarisch or bulgaria)))) or (bulgar or bulger))*.