Perhaps you should try some spelling variations:
vulgareiae » bulgariae, vulgarise
bulgaricae » bulgarica, bulgarische, bulgarie, bulgareicae, vulgaricae, bulgarieicae
bulgareische » bulgarische, bulgarisch, bulgarischer, bulgareeische, vulgareische, bulgarieeische
bulgarischen » ungarischen, bulgarien, ungarische, bulgareischen, vulgarischen, bulgarieischen
bulgarian » hungarian, bulgareian, vulgarian, bulgarieian
bulgaria » bulgareia, vulgaria, bulgarieia
bulgar » bulgare, vulgar, bulgarie
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: ((vulgareiae OR ((bulgaricae OR (bulgareische OR bulgarischen)) OR (bulgarian OR bulgaria))) OR (bulgar OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((vulgareiae or ((bulgaricae or (bulgareische or bulgarischen)) or (bulgarian or bulgaria))) or (bulgar or bulger))*.