Perhaps you should try some spelling variations:
"interdisciplinary approach mathematics" » "multidisciplinary approach mathematics", "interdisciplinary approaches mathematics", "interdisciplinary approaches mathematical", "interdisciplinary applied mathematics"
"interdisciplinary approach mathematical" » "multidisciplinary approach mathematical", "interdisciplinary approaches mathematical", "interdisciplinary appendix mathematical", "interdisciplinary applied mathematical"
"interdisciplinary area mathematics" » "interdisciplinary care mathematics", "interdisciplinary case mathematics", "interdisciplinary _ mathematics", "interdisciplinary area mathematical", "interdisciplinary treat mathematics", "interdisciplinary real mathematics"

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