Perhaps you should try some spelling variations:
основеіе\\" » основі\\" (Expand Search), основе\\" (Expand Search), основні\\" (Expand Search), основіеіе\\" (Expand Search), основееіе\\" (Expand Search)
основеіеные\" » основіные\" (Expand Search), основеные\" (Expand Search), основніные\" (Expand Search), основіеіеные\" (Expand Search), основееіеные\" (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 (основеіе\\\" OR (основные\\\" OR основеіеные\\"))) OR (\\\"ґрунтова основ\\\"))~\\"\"".
• Removing quotes may allow a broader search: ((\ ґрунтова (основеіе\ OR (основные\ OR основеіеные ))) OR (\ ґрунтова основ\ ))~.