Perhaps you should try some spelling variations:
training decreases » training increases (Expand search)
decrease training » increased training (Expand search), disease training (Expand search), release training (Expand search)
decrease teaching » decrease replacing (Expand search), case teaching (Expand search), sciense teaching (Expand search)
teaching project » teaching process (Expand search), teaching subject (Expand search)
decreases toc » decrease toc (Expand search), decreases mtor (Expand search), decreases the (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » can increase (Expand search), and decrease (Expand search), to decrease (Expand search)

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: "(( decrease training decreases toc decrease ) OR ( decrease can decrease teaching project ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease training decreases toc decrease ) OR ( decrease can decrease teaching project ))*.