Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarian, vulgariae, bulgeriae, bulgariaiae
bulgeriae » bulgaricae, bulgaria, bulgarian
bulgar » vulgar, bulger, bulgaria
bulgare » vulgare, bulgere, bulgariae, bulgarie, bulgaria
bulgarien » vulgarien, bulgerien, bulgariaien, bulgarian, bulgaria

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