Perhaps you should try some spelling variations:
specialized periodicals » socialism periodicals, specialized medical, specialized protocols
specialist periodical » socialism periodicals, specialist neurological
specialist medical » special medical, specific medical, specialist seminar

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: ((((specialist periodical) OR (specialist medical))) OR (specialized periodicals)) record.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((specialist periodical) OR (specialist medical))) or (specialized periodicals)) record".
• Adding a wildcard symbol may retrieve word variants: ((((specialist periodical) OR (specialist medical))) or (specialized periodicals)) record*.