Perhaps you should try some spelling variations:
"advanced in chemistry species" » "advanced in chemistry specimen", "advanced in chemistry series", "advanced in chemistry spaces"
"advanced in chemistry special" » "advanced in chemistry social", "advanced in chemistry chemical", "advanced in chemistry section"

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