Perhaps you should try some spelling variations:
"За советскую наука" » "За советская наука" (Expand Search), "За советское наука" (Expand Search), "За советском наука" (Expand Search)
"За советские наука" » "За советское наука" (Expand Search), "За советская наука" (Expand Search)
"За советскии науки" » "За советская науки" (Expand Search), "За советскии наук" (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: "((((\"За советскую наука\") OR (\"За советские наука\"))) OR (\"За советскии науки\"))~".
• Removing quotes may allow a broader search: (((( За советскую наука ) OR ( За советские наука ))) OR ( За советскии науки ))~.
• Adding a wildcard symbol may retrieve word variants: (((("За советскую наука") OR ("За советские наука"))) OR ("За советскии науки"))*.