Perhaps you should try some spelling variations:
"interdisciplinary approaches mathematics" » "interdisciplinary approach mathematics", "multidisciplinary approach mathematics", "interdisciplinary approaches mathematical", "interdisciplinary approach mathematical"
"interdisciplinary applied mathematical" » "interdisciplinary approach mathematical", "interdisciplinary analyses mathematical", "interdisciplinary aspects mathematical", "interdisciplinary applied mathematics", "interdisciplinary appendix mathematical", "interdisciplinary advanced mathematical"

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