Perhaps you should try some spelling variations:
"mathematical sciences research contributions publications" » "mathematical sciences research contributors publications", "mathematical sciences research contributions applications", "mathematical sciences research contributions implications", "mathematical science research contributions publications", "mathematical services research contributions publications"
"mathematical sciences research institutions publications" » "mathematical sciences research institutional publications", "mathematical sciences research institutions implications", "mathematical sciences research institute publications", "mathematical sciences research institutes publications", "mathematical sciences research implications publications", "mathematical science research institutions publications", "mathematical services research institutions publications"
"mathematical sciences research institutions applications" » "mathematical sciences research institutions implications", "mathematical sciences research distributions applications", "mathematical sciences research institutional implications", "mathematical sciences research institutes applications", "mathematical sciences research institute applications", "mathematical sciences research implications applications", "mathematical science research institutions applications", "mathematical services research institutions applications"

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 sciences research institutions applications"))) OR ("mathematical sciences research contributions publications")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mathematical sciences research institutions publications\") OR (\"mathematical sciences research institutions applications\"))) or (\"mathematical sciences research contributions publications\"))".
• Removing quotes may allow a broader search: (((( mathematical sciences research institutions publications ) OR ( mathematical sciences research institutions applications ))) or ( mathematical sciences research contributions publications )).
• Adding a wildcard symbol may retrieve word variants: (((("mathematical sciences research institutions publications") OR ("mathematical sciences research institutions applications"))) or ("mathematical sciences research contributions publications"))*.