Perhaps you should try some spelling variations:
"advanced in chemistry surfaces" » "advanced in chemistry surface", "advanced in chemistry sources"
"advanced in chemistry space" » "advanced in chemistry some", "advanced in chemistry simple"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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