Perhaps you should try some spelling variations:
"pollutant evolution prediction" » "pollutant evolution reaction", "pollutant location prediction", "pollutant evolution section", "pollutants evaluation prediction", "pollutant deposition prediction", "pollutant regulation prediction"
"pollutant emotion prediction" » "pollutant motion prediction", "pollutant relation prediction", "pollutant action prediction", "pollutant emission prediction", "pollutant deposition prediction"

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: "((\"pollutant emotion prediction\") OR (\"pollutant evolution prediction\"))".
• Removing quotes may allow a broader search: (( pollutant emotion prediction ) OR ( pollutant evolution prediction )).
• Adding a wildcard symbol may retrieve word variants: (("pollutant emotion prediction") OR ("pollutant evolution prediction"))*.