Perhaps you should try some spelling variations:
chemistry metrics » chemistry methods, chemistry materials, chemistry mechanics
chemistry species » chemistry specimen, chemistry spaces, chemistry specific
chemistry special » chemistry social, chemistry chemical, chemistry section
chemistry series » chemistry studies, chemistry sources, chemistry sars
chemistry ethics » chemistry methods, chemistry basics, chemistry topics
chemistry optics » chemistry topics, chemistry basics, chemistry outlines
chemistry erich » chemistry africa, chemistry eco, chemistry american

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