Perhaps you should try some spelling variations:
"human genetic periodicals." » "human genetics periodicals.", "human genomics periodicals.", "human kinetics periodicals.", "human genometic periodicals."
"human genes periodicals." » "human genomes periodicals.", "human bees periodicals.", "human games periodicals.", "human genetics periodicals.", "human genome periodicals.", "human agency periodicals."
"human gene periodicals." » "human genome periodicals.", "human genus periodicals.", "human leone periodicals."

You may be able to get more results by adjusting your search query.

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