Perhaps you should try some spelling variations:
decrease pain » decreases pain (Expand search), decrease in (Expand search), decreased brain (Expand search)
pain decrease » can decrease (Expand search), taping decrease (Expand search), brain decreases (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » not increase (Expand search), and decrease (Expand search), _ decrease (Expand search)
decrease eeg » decrease need (Expand search), decrease treg (Expand search), decrease cell (Expand search)
eeg patterns » eeg pattern (Expand search), feeding patterns (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)

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: (( decrease pain decrease to decrease ) OR ( decrease NOT decrease eeg patterns ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease pain decrease to decrease ) OR ( decrease not decrease eeg patterns ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease pain decrease to decrease ) OR ( decrease not decrease eeg patterns ))*.