Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgarie, bulgarians, bulgareiae, vulgariae, bulgarieiae
bulgarian » hungarian, bulgareian, vulgarian, bulgarieian
bulgarische » bulgarischen, ungarische, bulgareische, vulgarische, bulgarieische
vulgaria » vulgaris, vulgari, vulvaria
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
bulger » 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 bulgarian) OR (bulgarische OR (bulgaria OR vulgaria))) OR ((bulgar OR bulger) OR bulge)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or bulgarian) or (bulgarische or (bulgaria or vulgaria))) or ((bulgar OR bulger) or bulge))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or bulgarian) or (bulgarische or (bulgaria or vulgaria))) or ((bulgar OR bulger) or bulge))*.