Perhaps you should try some spelling variations:
chemistry specimen » chemistry sediment, chemistry specific, chemistry experiment
chemistry studies » chemistry study, chemical studies
chemistry species » chemistry spaces, chemistry specific, chemistry space
chemistry special » chemistry chemical, chemistry section, chemistry space
chemistry series » chemistry sources, chemistry sars, chemistry seeing
chemistry erich » chemistry metrics, chemistry africa, chemistry ethics

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: "((((\"advances in ((chemistry series) OR (chemistry studies))\") or (\"advances in chemistry erich\"))) or (\"advances in ((((chemistry species) OR (chemistry specimen))) OR (((chemistry special) OR (chemistry social))))\"))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((((\\"advances in ((chemistry series) or (chemistry studies))\\") or (\\"advances in chemistry erich\\"))) or (\\"advances in ((((chemistry species) or (chemistry specimen))) or (((chemistry special) OR (chemistry social))))\\"))\"".
• Removing quotes may allow a broader search: (((( advances in ((chemistry series) or (chemistry studies)) ) or ( advances in chemistry erich ))) or ( advances in ((((chemistry species) or (chemistry specimen))) or (((chemistry special) OR (chemistry social)))) )).