Perhaps you should try some spelling variations:
nationala » nationale (Expand Search), nationalen (Expand Search), nationaler (Expand Search)
nationalae » nationalee (Expand Search), nationalene (Expand Search), nationalere (Expand Search), nationale (Expand Search), nationalen (Expand Search), nationaler (Expand Search)
nationalesa » nationales (Expand Search), nationale (Expand Search), nationalen (Expand Search)
nationalene » nationalen (Expand Search), nationale (Expand Search), nationaler (Expand Search)
academie » akademie (Expand Search), academia (Expand Search), academic (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: (nationala OR ((nationalesa OR nationalae) OR nationalene)) academie of sciences of ukraine~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(nationala OR ((nationalesa OR nationalae) OR nationalene)) academie of sciences of ukraine".
• Adding a wildcard symbol may retrieve word variants: (nationala OR ((nationalesa OR nationalae) OR nationalene)) academie of sciences of ukraine*.