Perhaps you should try some spelling variations:
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
during decrease » during increased (Expand search), during depressed (Expand search), during disease (Expand search)
decrease tocar » decrease toc (Expand search), decrease total (Expand search), decrease towards (Expand search)
decrease acid » decrease and (Expand search), decrease lipid (Expand search), decrease asian (Expand search)
acid decrease » acid degreaser (Expand search), rapid decrease (Expand search), and decrease (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (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 acid decrease during decrease ) OR ( decrease NOT decrease tocar doi ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease acid decrease during decrease ) OR ( decrease not decrease tocar doi ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease acid decrease during decrease ) OR ( decrease not decrease tocar doi ))*.