Perhaps you should try some spelling variations:
training proposals » training proposal (Expand search), training protocols (Expand search), teaching proposals (Expand search)
decrease training » increased training (Expand search), disease training (Expand search), release training (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decreases disease (Expand search)
decrease after » increase after (Expand search), disease after (Expand search)
decrease not » decrease of (Expand search), decrease at (Expand search), decrease akt (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (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 NOT decrease training proposals ) OR ( decrease il decrease decrease after ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not decrease training proposals ) OR ( decrease il decrease decrease after ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not decrease training proposals ) OR ( decrease il decrease decrease after ))*.