Perhaps you should try some spelling variations:
"advanced in chemistry section" » "advanced in chemistry education", "advanced in chemistry social"
"advanced in chemistry spaces" » "advanced in chemistry space", "advanced in chemistry species", "advanced in chemistry snakes"

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: (("advanced in chemistry spaces") OR ("advanced in chemistry section")).
• Removing quotes may allow a broader search: (( advanced in chemistry spaces ) or ( advanced in chemistry section )).
• Adding a wildcard symbol may retrieve word variants: (("advanced in chemistry spaces") or ("advanced in chemistry section"))*.