Perhaps you should try some spelling variations:
основіе\\" » основі\\" (Expand Search), основе\\" (Expand Search), основные\\" (Expand Search), основііе\\" (Expand Search), основеіе\\" (Expand Search)
основныеіе\" » основные\" (Expand Search), основныее\" (Expand Search), основніе\" (Expand Search), основіныеіе\" (Expand Search), основеныеіе\" (Expand Search)
основныеі\\" » основные\\" (Expand Search), основні\\" (Expand Search), основіныеі\\" (Expand Search), основеныеі\\" (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 основныеіе\\") OR основныеі\\\")) OR (\\\"ґрунтова основ\\\"))\\"\"".
• Removing quotes may allow a broader search: ((\ ґрунтова ((основіе\ OR основныеіе ) OR основныеі\ )) OR (\ ґрунтова основ\ )).