Perhaps you should try some spelling variations:
"Advances in chemistry special" » "Advances in chemistry social", "Advances in chemistry chemical", "Advances in chemistry section"
"advances in chemistry sources" » "advances in chemistry courses", "advances in chemistry surfaces", "advances in chemistry studies"

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 special") OR ("advances in chemistry sources")).
• Removing quotes may allow a broader search: (( Advances in chemistry special ) or ( advances in chemistry sources )).
• Adding a wildcard symbol may retrieve word variants: (("Advances in chemistry special") or ("advances in chemistry sources"))*.