Perhaps you should try some spelling variations:
during decrease » during increased (Expand search), during depressed (Expand search), during disease (Expand search)
decrease lipid » increases lipid (Expand search), increased lipid (Expand search)
lipid increase » rapid increase (Expand search), yield increase (Expand search), field increase (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to decrease (Expand search)

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

• Removing quotes may allow a broader search: (( decrease of decrease AND preprocessing ) OR ( decrease lipid increase during decrease ))~.