Perhaps you should try some spelling variations:
"bibliothek historica rumanien 1938" » "bibliothek historica romaniae 1938" (Expand Search), "bibliothek historica rumanien 1918" (Expand Search), "bibliothek historica rumanien 1935" (Expand Search), "bibliothek historica rumanien 1925" (Expand Search)
"bibliotheca historica romania 1918" » "bibliotheca historica romaniae 1918" (Expand Search), "bibliotheca historica romania 1925" (Expand Search), "bibliotheca historica rumanien 1918" (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: (("bibliothek historica rumanien 1938") OR ("bibliotheca historica romania 1918"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"bibliothek historica rumanien 1938\") OR (\"bibliotheca historica romania 1918\"))*".
• Removing quotes may allow a broader search: (( bibliothek historica rumanien 1938 ) OR ( bibliotheca historica romania 1918 ))*.