Perhaps you should try some spelling variations:
chemistry studies » chemistry study, chemical studies
chemistry species » chemistry specimen, chemistry special, chemistry series
chemistry erich » chemistry metrics, chemistry africa, chemistry ethics

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• If you are trying to use Boolean operators, they must be ALL CAPS: %22advances in ((((chemistry studies) OR (chemistry erich))) OR (chemistry species))%22.
• Adding a wildcard symbol may retrieve word variants: %22advances in ((((chemistry studies) or (chemistry erich))) or (chemistry species))%22*.