Perhaps you should try some spelling variations:
decrease abortive » decreases aortic (Expand search), decrease overtime (Expand search)
abortive effect » additive effect (Expand search), additive effects (Expand search), adaptive effects (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), can 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 their decrease that decrease ) OR ( decrease NOT decrease abortive effect ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease their decrease that decrease ) OR ( decrease not decrease abortive effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decrease that decrease ) OR ( decrease not decrease abortive effect ))*.