Perhaps you should try some spelling variations:
nationala » nationale (Expand Search), nationalen (Expand Search)
nationalaena » nationaleena (Expand Search), nationalenena (Expand Search), nationalen (Expand Search), nationale (Expand Search), nationales (Expand Search)
rationalen » nationalen (Expand Search), nationale (Expand Search), nationales (Expand Search)
nationalees » nationales (Expand Search), nationale (Expand Search), nationalen (Expand Search)
nationaler » nationale (Expand Search), nationalen (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: ((nationala OR (nationalaena OR (rationalen OR nationalees))) OR nationaler) universitat of kharkiv~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nationala OR (nationalaena OR (rationalen OR nationalees))) OR nationaler) universitat of kharkiv".
• Adding a wildcard symbol may retrieve word variants: ((nationala OR (nationalaena OR (rationalen OR nationalees))) OR nationaler) universitat of kharkiv*.