Perhaps you should try some spelling variations:
toc decreased » to decreased (Expand search), the decreased (Expand search), not decreased (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decrease or (Expand search)
decreased to » decreased the (Expand search), decreased tgf (Expand search), decreased in (Expand search)
decrease and » decreases and (Expand search), decrease of (Expand search), decrease the (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
in infected » hiv infected (Expand search), 1 infected (Expand search), co infected (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 toc decreased to decrease ) OR ( decrease AND decrease in infected ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease toc decreased to decrease ) OR ( decrease and decrease in infected ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease toc decreased to decrease ) OR ( decrease and decrease in infected ))*.