Perhaps you should try some spelling variations:
основеі\\" » основі\\" (Expand Search), основе\\" (Expand Search), основні\\" (Expand Search), основіеі\\" (Expand Search), основееі\\" (Expand Search)
основеіа\" » основіа\" (Expand Search), основеа\" (Expand Search), основніа\" (Expand Search), основі\" (Expand Search), основе\" (Expand Search), основні\" (Expand Search), основіеіа\" (Expand Search), основееіа\" (Expand Search)
основіііа\\" » основііііа\\" (Expand Search), основеіііа\\" (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 ((основеі\\\" OR основіііа\\\") OR основеіа\\")) OR (\\\"ґрунтова основ\\\"))*\\"\"".
• Removing quotes may allow a broader search: ((\ ґрунтова ((основеі\ OR основіііа\ ) OR основеіа )) OR (\ ґрунтова основ\ ))*.