Perhaps you should try some spelling variations:
national » nationale (Expand Search), nationaler (Expand Search), nationales (Expand Search)
nationalaen » nationaleaen (Expand Search), nationaleraen (Expand Search), nationalesaen (Expand Search), nationale (Expand Search), nationaler (Expand Search), nationales (Expand Search), nationaleen (Expand Search), nationaleren (Expand Search)
nationala » nationalea (Expand Search), nationalera (Expand Search), nationalesa (Expand Search), nationale (Expand Search), nationaler (Expand Search)
nationalen » nationaleen (Expand Search), nationaleren (Expand Search), nationalesen (Expand Search), nationale (Expand Search)
nationaleenae » nationaleeenae (Expand Search), nationalereenae (Expand Search), nationaleseenae (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: (national OR ((nationalaen OR (nationala OR nationalen)) OR nationaleenae)) universitat of kharkiv~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(national OR ((nationalaen OR (nationala OR nationalen)) OR nationaleenae)) universitat of kharkiv".
• Adding a wildcard symbol may retrieve word variants: (national OR ((nationalaen OR (nationala OR nationalen)) OR nationaleenae)) universitat of kharkiv*.