Perhaps you should try some spelling variations:
yield progression » field progression (Expand search), nafld progression (Expand search), cell progression (Expand search)
decreases yield » increases yield (Expand search), decreases cell (Expand search), decreases il (Expand search)
decrease litter » increased litter (Expand search), decrease after (Expand search), decreases liver (Expand search)
litter decrease » faster decrease (Expand search), life decrease (Expand search)
rate decreases » rats decreases (Expand search), rate decrease (Expand search), water decreases (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (Expand search), and 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 rate decreases yield progression ) OR ( decrease the decrease litter decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rate decreases yield progression ) OR ( decrease the decrease litter decrease ))*.