Perhaps you should try some spelling variations:
"mathematical geosciencess" » "mathematical geosciences", "mathematical geoscience", "mathematical biosciences"
"mathematical science" » "mathematical sciences", "mathematics science", "mathematical geosciences"

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: (("mathematical geosciencess") OR ("mathematical science")).
• Removing quotes may allow a broader search: (( mathematical geosciencess ) or ( mathematical science )).
• Adding a wildcard symbol may retrieve word variants: (("mathematical geosciencess") or ("mathematical science"))*.