Perhaps you should try some spelling variations:
socialist periodical » socialism periodicals, socialist political, socialist personal
periodical reports » periodical returns, periodic report, periodical record
specialist period » special period, specialist species, specialist hearing
socialist period » socialist party, socialist era, socialist poland

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( socialist periodical reports ) OR ( ((specialist period) OR (socialist period)) returns )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( socialist periodical reports ) or ( ((specialist period) OR (socialist period)) returns ))".
• Adding a wildcard symbol may retrieve word variants: (( socialist periodical reports ) or ( ((specialist period) OR (socialist period)) returns ))*.