Perhaps you should try some spelling variations:
bulgariae » bulgarian, bulgarie, bulgarians
bulgaricae » bulgarica, bulgarische, bulgarian
bulgareiae » bulgarian, bulgarie, bulgarean
vulgaridad » vulgarized
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 bulgaricae) OR bulgareiae) OR vulgaridad) OR (bulgaria OR bulger)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bulgariae OR bulgaricae) or bulgareiae) or vulgaridad) or (bulgaria or bulger))".
• Adding a wildcard symbol may retrieve word variants: ((((bulgariae OR bulgaricae) or bulgareiae) or vulgaridad) or (bulgaria or bulger))*.