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

You may be able to get more results by adjusting your search query.

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