Perhaps you should try some spelling variations:
"specialized periodicals reports" » "socialism periodicals reports", "specialized medical reports", "specialized protocols reports", "specialized periodicals part", "specialized periodic report", "specialized periodical record"
"specialist speciesical returns" » "specialist species returns", "specialist specific returns"
"special periodical returns" » "special pedagogical returns", "serials periodicals returns", "special medical returns", "special periodical sets"
"specialist period returns" » "socialist period returns", "special period returns", "specialist species returns"

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: "((((\"specialized periodicals reports\") OR (\"special periodical returns\"))) OR (((\"specialist speciesical returns\") OR (\"specialist period returns\"))))".
• Removing quotes may allow a broader search: (((( specialized periodicals reports ) OR ( special periodical returns ))) OR ((( specialist speciesical returns ) OR ( specialist period returns )))).
• Adding a wildcard symbol may retrieve word variants: (((("specialized periodicals reports") OR ("special periodical returns"))) OR ((("specialist speciesical returns") OR ("specialist period returns"))))*.