Perhaps you should try some spelling variations:
"northern transylvania" » "northern transylvanica" (Expand Search), "northern transylvanie" (Expand Search)
"wortern transilvania" » "wortern transylvanica" (Expand Search), "wortern transylvanie" (Expand Search), "wortern transsilvanien" (Expand Search), "worten transilvania" (Expand Search), "wornern transilvania" (Expand Search)
"worter transilvania" » "worter transylvanica" (Expand Search), "worter transylvanie" (Expand Search), "worter transsilvanien" (Expand Search), "worte transilvania" (Expand Search), "worner transilvania" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("northern transylvania") OR ((("wortern transilvania") OR ("worter transilvania"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"northern transylvania\") OR (((\"wortern transilvania\") OR (\"worter transilvania\"))))".
• Removing quotes may allow a broader search: (( northern transylvania ) OR ((( wortern transilvania ) OR ( worter transilvania )))).
• Adding a wildcard symbol may retrieve word variants: (("northern transylvania") OR ((("wortern transilvania") OR ("worter transilvania"))))*.