Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarie, bulgarians, bulgareiae, vulgariae, bulgeriae
bulgarian » hungarian, bulgareian, vulgarian, bulgerian
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgerische
bulgareia » bulgariia, bulgarie, bulgare, bulgareeia, vulgareia, bulgereia
vulgaria » vulgaris, vulgari, vulvaria
bulgaria » bulgareia, vulgaria, bulgeria
bulgar » bulgare, vulgar, bulger

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 bulgarian) OR (bulgarische OR ((bulgaria OR bulgareia) OR vulgaria))) OR (bulgar OR bulge)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgarian) or (bulgarische or ((bulgaria OR bulgareia) or vulgaria))) or (bulgar or bulge))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgarian) or (bulgarische or ((bulgaria OR bulgareia) or vulgaria))) or (bulgar or bulge))*.