Perhaps you should try some spelling variations:
"human gametes periodicals." » "human games periodicals.", "human diabetes periodicals.", "human wastes periodicals.", "human genes periodicals."
"human bites periodicals." » "human sites periodicals.", "human bikes periodicals.", "human mites periodicals.", "humans bite periodicals.", "human beings periodicals.", "human bodies periodicals."
"human bile periodicals." » "human bible periodicals.", "human file periodicals.", "human chile periodicals.", "human bone periodicals.", "human bio periodicals.", "human builder periodicals."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("human bites periodicals.") OR ("human bile periodicals."))) or ("human gametes periodicals."))~.
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• Adding a wildcard symbol may retrieve word variants: (((("human bites periodicals.") OR ("human bile periodicals."))) or ("human gametes periodicals."))*.