Perhaps you should try some spelling variations:
"nature et society ser." » "nature et societe ser.", "nature et society self.", "nature et society sri.", "nature e society ser.", "nature et societes ser."
"nature open society ser." » "nature open societe ser.", "nature open society self.", "nature open society sri.", "capture open society ser.", "natural open society ser.", "nature en society ser."
"nature _ social sectors." » "nature _ social sector."

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

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