Perhaps you should try some spelling variations:
основеі\\" » основі\\" (Expand Search), основе\\" (Expand Search), основні\\" (Expand Search), основіеі\\" (Expand Search), основееі\\" (Expand Search)
основеіеіа\" » основіеіа\" (Expand Search), основееіа\" (Expand Search), основніеіа\" (Expand Search), основіеіеіа\" (Expand Search), основееіеіа\" (Expand Search)
основніа\" » основні\" (Expand Search), основі\" (Expand Search), основные\" (Expand Search), основініа\" (Expand Search), основеніа\" (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 (основніа\\" OR основеіеіа\\"))) OR (\\\"ґрунтова основ\\\"))\\"\"".
• Removing quotes may allow a broader search: ((\ ґрунтова (основеі\ OR (основніа OR основеіеіа ))) OR (\ ґрунтова основ\ )).