Perhaps you should try some spelling variations:
основеі\\" » основі\\" (Expand Search), основе\\" (Expand Search), основні\\" (Expand Search), основіеі\\" (Expand Search), основееі\\" (Expand Search)
основеііеіеа\\" » основііеіеа\\" (Expand Search), основеіеіеа\\" (Expand Search), основнііеіеа\\" (Expand Search), основіеііеіеа\\" (Expand Search), основееііеіеа\\" (Expand Search)
основные\\" » основе\\" (Expand Search), основні\\" (Expand Search), основіные\\" (Expand Search), основеные\\" (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 основные\\\") OR основеііеіеа\\\")) OR (\\\"ґрунтова основ\\\"))\\"\"".
• Removing quotes may allow a broader search: ((\ ґрунтова ((основеі\ OR основные\ ) OR основеііеіеа\ )) OR (\ ґрунтова основ\ )).