Perhaps you should try some spelling variations:
"interdisciplinary approaches mathematical" » "multidisciplinary approach mathematical", "multidisciplinary approaches mathematical"
"interdisciplinary approach mathematical" » "multidisciplinary approach mathematical", "interdisciplinary appendix mathematical", "interdisciplinary applied mathematical", "interdisciplinary through mathematical"
"interdisciplinary applied mathematics" » "interdisciplinary analyses mathematics", "interdisciplinary aspects mathematics", "interdisciplinary area 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 approaches mathematical") OR ("interdisciplinary applied mathematics"))) OR ("interdisciplinary approach mathematical")).
• Removing quotes may allow a broader search: (((( interdisciplinary approaches mathematical ) or ( interdisciplinary applied mathematics ))) or ( interdisciplinary approach mathematical )).
• Adding a wildcard symbol may retrieve word variants: (((("interdisciplinary approaches mathematical") or ("interdisciplinary applied mathematics"))) or ("interdisciplinary approach mathematical"))*.