Perhaps you should try some spelling variations:
"За советскую наук" » "За советская наук" (Expand Search), "За советское наук" (Expand Search), "За советские наук" (Expand Search)
"За советскую науки" » "За советская науки" (Expand Search), "За советское науки" (Expand Search), "За советские науки" (Expand Search)
"За советскии наука" » "За советская наука" (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: (("За советскую наук") OR ((("За советскии наука") OR ("За советскую науки"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"За советскую наук\") OR (((\"За советскии наука\") OR (\"За советскую науки\"))))*".
• Removing quotes may allow a broader search: (( За советскую наук ) OR ((( За советскии наука ) OR ( За советскую науки ))))*.