Perhaps you should try some spelling variations:
"nature open society work." » "nature open society where.", "capture open society work.", "natural open society work.", "nature en society work."
"nature _ opiate users." » "nature _ opiate use.", "nature _ site users."
"nature et society pre." » "nature et society part.", "nature et society pt.", "nature et society pmis.", "nature et societe pre.", "nature e society pre.", "nature et societes pre."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nature et society pre.") or ("nature open society work."))) or ("nature _ opiate users."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nature et society pre.") OR ("nature open society work."))) OR ("nature _ opiate users."))*.
• Removing quotes may allow a broader search: (((( nature et society pre. ) or ( nature open society work. ))) or ( nature _ opiate users. ))*.