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)
decreased heart » decreased health (Expand search), decreased fear (Expand search), decreased left (Expand search)
hiv decreased » have decreased (Expand search), is decreased (Expand search), in decreased (Expand search)
heart objects » smart objects (Expand search), art objects (Expand search), earth objects (Expand search)
decrease hiv » decrease in (Expand search), decrease their (Expand search), decreased high (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease to decrease during decrease ) OR ( decrease hiv decreased heart objects ))~.