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