Perhaps you should try some spelling variations:
national » nationale (Expand Search), nationala (Expand Search), nationalen (Expand Search)
nationaleeeen » nationaleeeeen (Expand Search), nationalaeeeen (Expand Search), nationaleneeeen (Expand Search), nationalen (Expand Search)
nationalaeren » nationaleaeren (Expand Search), nationalaaeren (Expand Search), nationalenaeren (Expand Search), nationalen (Expand Search), nationaler (Expand Search)
nationalenaeeren » nationaleenaeeren (Expand Search), nationalaenaeeren (Expand Search), nationalenenaeeren (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 (nationaleeeen OR (nationalaeren OR nationalenaeeren))) universitat of kharkiv~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(national OR (nationaleeeen OR (nationalaeren OR nationalenaeeren))) universitat of kharkiv".
• Adding a wildcard symbol may retrieve word variants: (national OR (nationaleeeen OR (nationalaeren OR nationalenaeeren))) universitat of kharkiv*.