Perhaps you should try some spelling variations:
advanced mathematics » advanced mathematical, applied mathematics
based mathematical » basic mathematical
cambridge studies » cambridge students, cambridge study, cambridge ladies
cambridge stories » cambridge copies, cambridge ladies, cambridge shire

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: (("((cambridge studies) or (cambridge stories)) in advanced mathematics") OR ("((cambridge studies) or (cambridge stories)) in based mathematical")).
• Removing quotes may allow a broader search: (( ((cambridge studies) or (cambridge stories)) in advanced mathematics ) or ( ((cambridge studies) or (cambridge stories)) in based mathematical )).
• Adding a wildcard symbol may retrieve word variants: (("((cambridge studies) or (cambridge stories)) in advanced mathematics") or ("((cambridge studies) or (cambridge stories)) in based mathematical"))*.