Perhaps you should try some spelling variations:
"mathematical sciences research institutions publications" » "mathematics sciences research institutions publications", "mathematical sciences research institutions publication", "mathematical sciences research institutions publikationen"
"mathematical science research institutional publications" » "mathematics science research institutional publications", "mathematical science research institutional publication", "mathematical science research institutional publikationen"
"mathematical geosciences research institutions publications" » "mathematics geosciences research institutions publications", "mathematical geosciences research institutions publication", "mathematical geosciences research institutions publikationen", "mathematical geoscience research institutions publications", "mathematical neurosciences research institutions publications"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("mathematical sciences research institutions publications") OR ((("mathematical science research institutional publications") OR ("mathematical geosciences research institutions publications")))).
• Removing quotes may allow a broader search: (( mathematical sciences research institutions publications ) or ((( mathematical science research institutional publications ) or ( mathematical geosciences research institutions publications )))).
• Adding a wildcard symbol may retrieve word variants: (("mathematical sciences research institutions publications") or ((("mathematical science research institutional publications") or ("mathematical geosciences research institutions publications"))))*.