Perhaps you should try some spelling variations:
national » nationale (Expand Search), nationala (Expand Search), nationalen (Expand Search)
nationaler » nationaleer (Expand Search), nationalaer (Expand Search), nationalener (Expand Search), nationale (Expand Search), nationalen (Expand Search), nationala (Expand Search)
nationaleeren » nationaleeeren (Expand Search), nationalaeeren (Expand Search), nationaleneeren (Expand Search), nationalen (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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(national OR (nationaler OR (nationaleeren OR nationalenaeeren))) universitat of kharkiv~".
• Adding a wildcard symbol may retrieve word variants: (national OR (nationaler OR (nationaleeren OR nationalenaeeren))) universitat of kharkiv*.