Perhaps you should try some spelling variations:
"based mathematical geosciences" » "based mathematical sciences", "based mathematical science", "basic mathematical geosciences"
"based mathematics science" » "based mathematical sciences", "basic mathematics science", "advanced mathematics science"

Try widening your search to All Fields.

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