Perhaps you should try some spelling variations:
"interdisciplinary approach mathematical" » "interdisciplinary approaches mathematical", "interdisciplinary appendix mathematical", "interdisciplinary applied mathematical"
"multidisciplinary approach mathematics" » "multidisciplinary approaches mathematics", "multidisciplinary approaches mathematical", "multidisciplinary applied 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: (("multidisciplinary approach mathematics") OR ("interdisciplinary approach mathematical"))*.
• Removing quotes may allow a broader search: (( multidisciplinary approach mathematics ) or ( interdisciplinary approach mathematical ))*.