Perhaps you should try some spelling variations:
national » nationala (Expand Search), nationalen (Expand Search), nationaler (Expand Search)
nationalaer » nationalaaer (Expand Search), nationalenaer (Expand Search), nationaleraer (Expand Search), nationaler (Expand Search), nationalen (Expand Search), nationala (Expand Search)
nationale » nationalae (Expand Search), nationalene (Expand Search), nationalere (Expand Search)
nationalene » nationalaene (Expand Search), nationalenene (Expand Search), nationalerene (Expand Search), nationalen (Expand Search), nationaler (Expand Search), nationales (Expand Search)
nationalerena » nationalaerena (Expand Search), nationalenerena (Expand Search), nationalererena (Expand Search), nationalen (Expand Search), nationaler (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 nationalaer) OR (nationale OR (nationalene OR nationalerena))) universitat of kharkiv~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((national OR nationalaer) OR (nationale OR (nationalene OR nationalerena))) universitat of kharkiv".
• Adding a wildcard symbol may retrieve word variants: ((national OR nationalaer) OR (nationale OR (nationalene OR nationalerena))) universitat of kharkiv*.