Perhaps you should try some spelling variations:
"nature et society sector." » "nature et social sector.", "nature et society actors.", "nature e society sector.", "nature et societes sector.", "nature ceo society sector."
"nature et societe sector." » "nature et social sector.", "nature et societe ser.", "nature et society actor.", "nature la societe sector."
"nature _ social work." » "nature _ social workers."

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