Perhaps you should try some spelling variations:
"human physics periodicals." » "human analysis periodicals.", "human physical periodicals.", "cuban physics periodicals.", "urban physics periodicals."
"human flame periodicals." » "human france periodicals.", "human female periodicals.", "human flavor periodicals.", "human folate periodicals.", "human face periodicals."
"human game periodicals." » "human games periodicals.", "human care periodicals.", "human age periodicals.", "human gaze periodicals.", "human gene periodicals.", "human gait 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 physics periodicals.") or ((("human game periodicals.") OR ("human flame periodicals."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("human physics periodicals.") OR ((("human game periodicals.") OR ("human flame periodicals.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"human physics periodicals.\") or (((\"human game periodicals.\") OR (\"human flame periodicals.\"))))".
• Removing quotes may allow a broader search: (( human physics periodicals. ) or ((( human game periodicals. ) OR ( human flame periodicals. )))).
• Adding a wildcard symbol may retrieve word variants: (("human physics periodicals.") or ((("human game periodicals.") OR ("human flame periodicals."))))*.