Perhaps you should try some spelling variations:
bulgaricae » bulgarica, bulgarische, bulgarian
vulgarie » vulgarise, vulgaris, vulgare
bulger » bulge, bulges
bulgere » bulgee, bulgese, bulgare, bilgere, burgere
bulgee » bulge, bulges, bulged

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: ((bulgaricae OR bulgaria) OR (((vulgar OR vulgarie) OR bulger) OR (bulgere OR bulgee))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgaricae or bulgaria) or (((vulgar or vulgarie) or bulger) or (bulgere OR bulgee)))".
• Adding a wildcard symbol may retrieve word variants: ((bulgaricae or bulgaria) or (((vulgar or vulgarie) or bulger) or (bulgere OR bulgee)))*.