Perhaps you should try some spelling variations:
decrease formative » decreases formalin (Expand search), perverse formative (Expand search), decrease oxidative (Expand search)
formative process » formation process (Expand search), creative process (Expand search)
increased litter » increased winter (Expand search), increased after (Expand search), increased water (Expand search)
litter decrease » faster decrease (Expand search), life decrease (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not decrease (Expand search)
in increased » is increased (Expand search), an increased (Expand search), and increased (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 that decrease formative process ) OR ( decrease in increased litter decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease that decrease formative process ) OR ( decrease in increased litter decrease ))*.