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