Perhaps you should try some spelling variations:
national » nationale (Expand Search), nationala (Expand Search), nationalen (Expand Search)
nationaleaen » nationaleeaen (Expand Search), nationalaeaen (Expand Search), nationaleneaen (Expand Search), nationalen (Expand Search), nationalitaten (Expand Search), nationale (Expand Search)
nationalenenaen » nationaleenenaen (Expand Search), nationalaenenaen (Expand Search), nationalenenenaen (Expand Search)
nationalaeren » nationaleaeren (Expand Search), nationalaaeren (Expand Search), nationalenaeren (Expand Search), nationalen (Expand Search), nationaler (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 ((nationaleaen OR nationalenenaen) OR nationalaeren)) universitat of kharkiv~".
• Adding a wildcard symbol may retrieve word variants: (national OR ((nationaleaen OR nationalenenaen) OR nationalaeren)) universitat of kharkiv*.