Perhaps you should try some spelling variations:
"human gametes periodicals." » "human games periodicals.", "human diabetes periodicals.", "human wastes periodicals.", "human genes periodicals."
"human beast periodicals." » "human east periodicals.", "human yeast periodicals.", "human beauty periodicals.", "human breast periodicals.", "human beasts periodicals."
"human bees periodicals." » "human diabetes periodicals.", "human indexes periodicals.", "human devices periodicals.", "human bites periodicals.", "human bones periodicals.", "human beta periodicals."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("human bees periodicals.") OR ("human beast periodicals."))) or ("human gametes periodicals."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("human bees periodicals.") OR ("human beast periodicals."))) OR ("human gametes periodicals.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"human bees periodicals.\") OR (\"human beast periodicals.\"))) or (\"human gametes periodicals.\"))".
• Removing quotes may allow a broader search: (((( human bees periodicals. ) OR ( human beast periodicals. ))) or ( human gametes periodicals. )).
• Adding a wildcard symbol may retrieve word variants: (((("human bees periodicals.") OR ("human beast periodicals."))) or ("human gametes periodicals."))*.