Perhaps you should try some spelling variations:
bulgaricae » bulgarische, bulgarie, bulgarischen, bulgariene, bulgariee
bulgarian » hungarian
bulgarica » bulgarien, bulgarie
bulgarisch » bulgarische, bulgarischen
bulger » 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: (((bulgaricae OR bulgarian) OR (bulgaricae OR (bulgarica OR bulgarisch))) OR (bulgaria OR (bulger OR bulge))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((bulgaricae or bulgarian) or (bulgaricae or (bulgarica OR bulgarisch))) or (bulgaria or (bulger or bulge)))".
• Adding a wildcard symbol may retrieve word variants: (((bulgaricae or bulgarian) or (bulgaricae or (bulgarica OR bulgarisch))) or (bulgaria or (bulger or bulge)))*.