Perhaps you should try some spelling variations:
bulgariae » bulgaricae, bulgaria, bulgarie
vulgarian » bulgarians, bulgaria, hungarian
vulgaridad » vulgarized
bulgarian » bulgaria, hungarian
bulges » bulge

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 ((vulgarian OR vulgaridad) OR bulgarian)) OR (vulgar OR bulges)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bulgariae or ((vulgarian OR vulgaridad) or bulgarian)) or (vulgar or bulges))".
• Adding a wildcard symbol may retrieve word variants: ((bulgariae or ((vulgarian OR vulgaridad) or bulgarian)) or (vulgar or bulges))*.