Perhaps you should try some spelling variations:
decrease caries » decreased cardiac (Expand search), decreases cardiac (Expand search), decreased calorie (Expand search)
caries affected » are affected (Expand search), patients affected (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 akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » and decrease (Expand search), not decrease (Expand search), any 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 _ decrease akt decrease ) OR ( decrease their decrease caries affected ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease akt decrease ) OR ( decrease their decrease caries affected ))*.