Perhaps you should try some spelling variations:
"advances in chemistry surfaces" » "advances in chemistry surface", "advances in chemistry space"
"Advances in chemistry sources" » "Advances in chemistry studies", "Advances in chemistry force", "Advances in chemistry some"
"Advances in chemistry courses" » "Advances in chemistry current"

Try widening your search to All Fields.

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 sources") OR ("Advances in chemistry courses"))) OR ("advances in chemistry surfaces")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Advances in chemistry sources\") OR (\"Advances in chemistry courses\"))) or (\"advances in chemistry surfaces\"))".
• Removing quotes may allow a broader search: (((( Advances in chemistry sources ) OR ( Advances in chemistry courses ))) or ( advances in chemistry surfaces )).
• Adding a wildcard symbol may retrieve word variants: (((("Advances in chemistry sources") OR ("Advances in chemistry courses"))) or ("advances in chemistry surfaces"))*.