Perhaps you should try some spelling variations:
decrease lesions » disease lesions (Expand search), decreased response (Expand search), decrease adhesion (Expand search)
covid processing » solid processing (Expand search), food processing (Expand search), wood processing (Expand search)
lesions decrease » response decrease (Expand search), lesions case (Expand search)
increase covid » increased covid (Expand search), increase bond (Expand search), increase food (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate increase » the increase (Expand search), and increase (Expand search), an 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease rate increase covid processing ) OR ( decrease lesions decrease of decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rate increase covid processing ) OR ( decrease lesions decrease of decrease ))*.