Perhaps you should try some spelling variations:
"advances in chemistry sources" » "advances in chemistry courses", "advances in chemistry surfaces", "advances in chemistry studies"
"advances in chemistry series" » "advances in chemistry species", "advances in chemistry studies", "advances in chemistry erich"
"advances in clinical studies" » "advances in empirical studies"

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