Perhaps you should try some spelling variations:
основіе\\" » основі\\" (Expand Search), основе\\" (Expand Search), основные\\" (Expand Search), основііе\\" (Expand Search), основеіе\\" (Expand Search)
основіееныеі\\" » основіеныеі\\" (Expand Search), основееныеі\\" (Expand Search), основныееныеі\\" (Expand Search), основііееныеі\\" (Expand Search), основеіееныеі\\" (Expand Search)
основіні\" » основні\" (Expand Search), основі\" (Expand Search), основііні\" (Expand Search), основеіні\" (Expand Search)
основ\\" » основі\\" (Expand Search), основе\\" (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: "\"\\"((\\\"ґрунтова (основіе\\\" OR (основіні\\" OR основіееныеі\\\"))) OR (\\\"ґрунтова основ\\\"))\\"\"".
• Removing quotes may allow a broader search: ((\ ґрунтова (основіе\ OR (основіні OR основіееныеі\ ))) OR (\ ґрунтова основ\ )).