Perhaps you should try some spelling variations:
chemistry species » chemistry specimen, chemistry special, chemistry series
chemistry studies » chemistry study, chemical studies
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 erich) OR (chemistry species))\") or (\"advances in chemistry studies\"))".
• Removing quotes may allow a broader search: (( advances in ((chemistry erich) or (chemistry species)) ) or ( advances in chemistry studies )).