Perhaps you should try some spelling variations:
"bibliotheca historical rumanien 1925" » "bibliotheca historica rumanien 1925" (Expand Search), "bibliotheca historica romaniae 1925" (Expand Search), "bibliotheca historical rumanien 1935" (Expand Search), "bibliotheca historical rumanien 1918" (Expand Search), "bibliotheca historical rumanien 1938" (Expand Search)
"bibliotheca istorice romaniae 1925" » "bibliotheca historica romaniae 1925" (Expand Search), "bibliotheca istorice romania 1925" (Expand Search), "bibliotheca istorice romania 1918" (Expand Search), "bibliotheca istorice romaniae 1" (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: (("bibliotheca istorice romaniae 1925") OR ("bibliotheca historical rumanien 1925"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"bibliotheca istorice romaniae 1925\") OR (\"bibliotheca historical rumanien 1925\"))*".
• Removing quotes may allow a broader search: (( bibliotheca istorice romaniae 1925 ) OR ( bibliotheca historical rumanien 1925 ))*.