Perhaps you should try some spelling variations:
chemistry special » chemistry chemical, chemistry section, chemistry second
chemistry series » chemistry species, chemistry studies, chemistry sources
chemistry ethics » chemistry metrics, chemistry methods, chemistry basics
chemistry spaces » chemistry species, chemistry snakes, chemistry stacey
chemistry erich » chemistry metrics, chemistry africa, chemistry eco
chemistry space » chemistry some, chemistry simple

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 (\"advances in ((((chemistry spaces) OR (chemistry space))) OR (((chemistry special) OR (chemistry social))))\"))".
• 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 (\\"advances in ((((chemistry spaces) OR (chemistry space))) or (((chemistry special) or (chemistry social))))\\"))\"".
• Removing quotes may allow a broader search: (((( advances in chemistry series ) or ( advances in ((chemistry erich) or (chemistry ethics)) ))) or ( advances in ((((chemistry spaces) OR (chemistry space))) or (((chemistry special) or (chemistry social)))) )).