Perhaps you should try some spelling variations:
основіе » основі (Expand Search), основе (Expand Search), основные (Expand Search), основііе (Expand Search), основеіе (Expand Search)
основіеіе » основііе (Expand Search), основеіе (Expand Search), основныеіе (Expand Search), основіе (Expand Search), основее (Expand Search), основніе (Expand Search), основііеіе (Expand Search), основеіеіе (Expand Search)
основіеі » основіі (Expand Search), основеі (Expand Search), основныеі (Expand Search), основі (Expand Search), основе (Expand Search), основні (Expand Search), основііеі (Expand Search), основеіеі (Expand Search)
основ » основі (Expand Search), основе (Expand Search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ґрунтова (основіе OR ((основіе OR основіеіе ) OR основіеі ))) OR ( ґрунтова основ ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ґрунтова (основіе OR ((основіе OR основіеіе ) OR основіеі ))) OR ( ґрунтова основ ))~".
• Adding a wildcard symbol may retrieve word variants: (( ґрунтова (основіе OR ((основіе OR основіеіе ) OR основіеі ))) OR ( ґрунтова основ ))*.