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