Perhaps you should try some spelling variations:
"Механика сплошных ред" » "Механика сложных ред" (Expand Search)
"Механика сплошных руды" » "Механика сложных руды" (Expand Search), "Механика сплошных труды" (Expand Search), "Механика сплошных ряды" (Expand Search)
"Механика сплошных средаы" » "Механика сложных средаы" (Expand Search), "Механика сплошных среды" (Expand Search), "Механика сплошных среда" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("Механика сплошных ред") OR ((("Механика сплошных руды") OR ("Механика сплошных средаы"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Механика сплошных ред\") OR (((\"Механика сплошных руды\") OR (\"Механика сплошных средаы\"))))*".
• Removing quotes may allow a broader search: (( Механика сплошных ред ) OR ((( Механика сплошных руды ) OR ( Механика сплошных средаы ))))*.