Perhaps you should try some spelling variations:
with paternal » with maternal (Expand search), with external (Expand search), with internal (Expand search)
decrease with » decreases with (Expand search), increase with (Expand search), decrease the (Expand search)
decrease its » decreases its (Expand search), increase its (Expand search), decrease at (Expand search)
its decrease » with decrease (Expand search), nts decreases (Expand search), to decrease (Expand search)
decrease hiv » decrease their (Expand search), decreased high (Expand search), decrease of (Expand search)
hiv decrease » via decrease (Expand search), hiv increase (Expand search), will decrease (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain 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 its decrease hiv decrease ) OR ( decrease in decrease with paternal ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease its decrease hiv decrease ) OR ( decrease in decrease with paternal ))*.