Perhaps you should try some spelling variations:
decrease survival » decreased survival (Expand search), decreases survival (Expand search), increase survival (Expand search)
survival pattern » survival patterns (Expand search), survival after (Expand search), survival protein (Expand search)
decrease skins » decrease in (Expand search), increase skin (Expand search), decrease owing (Expand search)
skins decrease » statins decrease (Expand search), lesions decrease (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), or decrease (Expand search), of 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 skins decrease NOT decrease ) OR ( decrease on decrease survival pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease skins decrease NOT decrease ) OR ( decrease on decrease survival pattern ))*.