Perhaps you should try some spelling variations:
chemistry section » chemistry education, chemistry social
chemistry sources » chemistry courses, chemistry surfaces, chemistry studies
chemistry series » chemistry species, chemistry studies, chemistry erich

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 OR advanced) in ((((chemistry series) OR (chemistry sources))) OR (chemistry section)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(advances or advanced) in ((((chemistry series) OR (chemistry sources))) or (chemistry section))".
• Adding a wildcard symbol may retrieve word variants: (advances or advanced) in ((((chemistry series) OR (chemistry sources))) or (chemistry section))*.