Perhaps you should try some spelling variations:
bulgar » vulgar, bulger, bulgarie
bulgaricae » vulgaricae, bulgericae, bulgarieicae, bulgarica, bulgarian, bulgarie
bulgarische » vulgarische, bulgerische, bulgarieische, bulgarischen, ungarische
bulgaria » vulgaria, bulgeria, bulgarieia
bulgare » vulgare, bulgere, bulgariee, bulgarie, bulgarien

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