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 specific returns" » "specialist species returns", "specialty specific returns", "species specific returns", "specialist specific return", "specialist specific regions", "specialist specific results"
"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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("specialized periodicals reports") OR ("special periodical returns"))) OR ((("specialist specific returns") OR ("specialist period returns")))).
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• Adding a wildcard symbol may retrieve word variants: (((("specialized periodicals reports") or ("special periodical returns"))) or ((("specialist specific returns") or ("specialist period returns"))))*.