Perhaps you should try some spelling variations:
"der teaching relaxation studies / der teaching relaxation studies" » "der breathing relaxation studies / der breathing relaxation studies", "der teaching realisation studies / der teaching realisation studies", "der heating relaxation studies / der heating relaxation studies", "er teaching relaxation studies / er teaching relaxation studies", "her teaching relaxation studies / her teaching relaxation studies", "peer teaching relaxation studies / peer teaching relaxation studies"
"der teaching religion studies / der teaching religion studies" » "der teaching religious studies / der teaching religious studies", "der learning religion studies / der learning religion studies", "der making religion studies / der making religion studies", "der teaching religion study / der teaching religion study", "der teaching religion stated / der teaching religion stated", "er teaching religion studies / er teaching religion studies", "her teaching religion studies / her teaching religion studies", "peer teaching religion studies / peer teaching religion studies"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"der teaching religion studies / der teaching religion studies\") OR (\"der teaching relaxation studies / der teaching relaxation studies\"))".
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