Perhaps you should try some spelling variations:
chemistry studies » chemistry study
chemistry series » chemistry species, chemistry sources, chemistry sars
chemical studies » biochemical studies, clinical studies, classical 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 series ) OR ( advances in chemistry erich ))) OR ( advances in ((chemistry studies) OR (chemical studies)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( advances in chemistry series ) or ( advances in chemistry erich ))) or ( advances in ((chemistry studies) OR (chemical studies)) ))".
• Adding a wildcard symbol may retrieve word variants: (((( advances in chemistry series ) or ( advances in chemistry erich ))) or ( advances in ((chemistry studies) OR (chemical studies)) ))*.