Perhaps you should try some spelling variations:
основіе » основі (Expand Search), основе (Expand Search), основные (Expand Search), основііе (Expand Search), основеіе (Expand Search)
основні » основі (Expand Search), основіні (Expand Search), основені (Expand Search)
основееіе » основіе (Expand Search), основее (Expand Search), основіееіе (Expand Search), основеееіе (Expand Search)
основееі » основі (Expand Search), основе (Expand Search), основіееі (Expand Search), основеееі (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 основееіе ) OR (основні OR основееі ))) OR ( ґрунтова основ ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ґрунтова ((основіе OR основееіе ) OR (основні OR основееі ))) OR ( ґрунтова основ ))~".
• Adding a wildcard symbol may retrieve word variants: (( ґрунтова ((основіе OR основееіе ) OR (основні OR основееі ))) OR ( ґрунтова основ ))*.