Perhaps you should try some spelling variations:
chemistry specimen » chemistry sediment, chemistry specific, chemistry experiment
chemistry species » chemistry series, chemistry spaces, chemistry specific
chemistry special » chemistry social, chemistry chemical, chemistry section

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