Perhaps you should try some spelling variations:
chemistry surfaces » chemistry surface, chemistry space
chemistry specimen » chemistry sediment, chemistry special, chemistry specific
chemistry sources » chemistry courses, chemistry studies, chemistry force
chemistry species » chemistry special, chemistry series, chemistry spaces
chemistry africa » chemistry metrics, chemistry after, chemistry atomic
chemistry erich » chemistry metrics, chemistry ethics, chemistry series

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