Perhaps you should try some spelling variations:
national » nationl (Expand Search), nationsl (Expand Search), nationalal (Expand Search)
nationa » nation (Expand Search), nations (Expand Search), nationala (Expand Search)
nationale » nationle (Expand Search), nationsle (Expand Search), nationalale (Expand Search)
nationalese » nationlese (Expand Search), nationslese (Expand Search), nationalalese (Expand Search)
nationalen » nationlen (Expand Search), nationslen (Expand Search), nationalalen (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 nationa) OR (nationale OR (nationalese OR nationalen))) university of kharkiv~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((national OR nationa) OR (nationale OR (nationalese OR nationalen))) university of kharkiv".
• Adding a wildcard symbol may retrieve word variants: ((national OR nationa) OR (nationale OR (nationalese OR nationalen))) university of kharkiv*.