Perhaps you should try some spelling variations:
bulgarische » bulgarischen, ungarische, bulgareische, bulgariaische, bulgarieische
vulgaria » bulgaria, vulgari, vulvaria
vulgaris » bulgaria
bulgar » bulgare, bulgaria, bulgarie
bulger » bulge, bulges
bulgere » bulgee, bulgese, bulgare, bilgere, burgere

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