Perhaps you should try some spelling variations:
"nature et society ser." » "nature et societe ser.", "nature et society self.", "nature et society sts.", "nature e society ser.", "nature et societes ser."
"nature et society sri." » "nature et society sts.", "nature et society series.", "nature et society self.", "nature et societe sri.", "nature e society sri.", "nature et societes sri."
"nature _ social work." » "nature _ social workers."

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 et society sri."))) OR ("nature _ social work."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"nature et society ser.\") OR (\"nature et society sri.\"))) or (\"nature _ social work.\"))~".
• Removing quotes may allow a broader search: (((( nature et society ser. ) OR ( nature et society sri. ))) or ( nature _ social work. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("nature et society ser.") OR ("nature et society sri."))) or ("nature _ social work."))*.