Perhaps you should try some spelling variations:
"nature et societe users." » "nature et societe ser.", "nature et societe series.", "nature et opiate users."
"nature la societe users." » "nature la societe ser.", "nature la societe series.", "nature la opiate users.", "nature a societe users.", "nature land societe users.", "nature all societe users."
"nature _ societe des." » "nature _ societes de."

Try widening your search to All Fields.

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

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