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 applied mathematics") OR ((("interdisciplinary approach mathematical") OR ("interdisciplinary approaches mathematical"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"interdisciplinary applied mathematics\") or (((\"interdisciplinary approach mathematical\") OR (\"interdisciplinary approaches mathematical\"))))*".
• Removing quotes may allow a broader search: (( interdisciplinary applied mathematics ) or ((( interdisciplinary approach mathematical ) OR ( interdisciplinary approaches mathematical ))))*.