Perhaps you should try some spelling variations:
"interdisciplinary issues mathematics" » "interdisciplinary dialogues mathematics", "interdisciplinary discourse mathematics", "interdisciplinary insights mathematics", "interdisciplinary values mathematics", "interdisciplinary images mathematics", "interdisciplinary sites mathematics"
"interdisciplinary issues mathematical" » "interdisciplinary dialogues mathematical", "interdisciplinary discourse mathematical", "interdisciplinary insights mathematical", "interdisciplinary tissue mathematical", "interdisciplinary images mathematical", "interdisciplinary losses mathematical"
"interdisciplinary analysis mathematik" » "interdisciplinary analysis mathematics", "interdisciplinary analysis mathematical", "interdisciplinary analysis mathematische"

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