Perhaps you should try some spelling variations:
"advances in geophysical and environmental geomechanics and mathematics" » "advances in geophysical and environmental mechanics and mathematics", "advances in geophysical and environmental mechanisms and mathematics", "advances in geophysical and environment mechanics and mathematics"
"advances in geophysics and environmental geotechnics and mathematics" » "advances in geophysics and environmental ethics and mathematics", "advances in geophysics and environmental protection and mathematics"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("advances in geophysical and environmental geomechanics and mathematics") OR ("advances in geophysics and environmental geotechnics and mathematics")).
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