Perhaps you should try some spelling variations:
bulgariae » bulgarie, bulgarians, bulgarien, bulgareiae, vulgariae, bulgarieiae
vulgariae » vulgarise, vulgarisee, vulgarises
vulgaridad » vulgarized
bulgaricae » bulgarische, bulgarie, bulgaricus, bulgariene, bulgariee, bulgareicae, vulgaricae, bulgarieicae
bulgarian » hungarian, bulgareian, vulgarian, bulgarieian
bulgarica » bulgarisch, bulgarien, bulgarie, bulgareica, vulgarica, bulgarieica
bulgar » bulgare, vulgar, bulgarie
bulgaria » bulgareia, vulgaria, bulgarieia
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 (vulgariae OR vulgaridad)) OR (bulgaricae OR (bulgarian OR bulgarica))) OR ((bulgar OR bulgaria) OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgariae or (vulgariae OR vulgaridad)) or (bulgaricae or (bulgarian or bulgarica))) or ((bulgar or bulgaria) or bulger))".
• Adding a wildcard symbol may retrieve word variants: (((bulgariae or (vulgariae OR vulgaridad)) or (bulgaricae or (bulgarian or bulgarica))) or ((bulgar or bulgaria) or bulger))*.