Perhaps you should try some spelling variations:
chemistry specific » chemistry specificity, chemistry species, chemistry specimen
chemistry studies » chemistry study, chemical studies
chemistry special » chemistry social, chemistry chemical, chemistry section
chemistry series » chemistry species, chemistry sources, chemistry sars
chemistry africa » chemistry metrics, chemistry after, chemistry atomic
chemistry erich » chemistry metrics, chemistry ethics, chemistry eco

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 (chemistry africa))\"))) or (\"advances in ((chemistry specific) OR (chemistry special))\"))".
• 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 (chemistry africa))\\"))) or (\\"advances in ((chemistry specific) or (chemistry special))\\"))\"".
• Removing quotes may allow a broader search: (((( advances in ((chemistry series) or (chemistry studies)) ) or ( advances in ((chemistry erich) OR (chemistry africa)) ))) or ( advances in ((chemistry specific) or (chemistry special)) )).