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 after » increase after (Expand search), disease after (Expand search)
after decrease » faster decrease (Expand search), after deceased (Expand search), litter decrease (Expand search)
decreased to » decreased the (Expand search), decreased tgf (Expand search), decreased in (Expand search)
decrease hiv » decrease in (Expand search), decrease their (Expand search), decreased high (Expand search)
hiv defects » hf defects (Expand search), ii defects (Expand search), iii defects (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 during decrease after decrease ) OR ( decreased to decrease hiv defects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during decrease after decrease ) OR ( decreased to decrease hiv defects ))*.