Perhaps you should try some spelling variations:
tanning processes » training processes (Expand search), planning processes (Expand search), tanning process (Expand search)
decrease tanning » decreased running (Expand search), decrease walking (Expand search), decreases handling (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (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 _ decrease tanning processes ) OR ( decrease rate decrease AND decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease tanning processes ) OR ( decrease rate decrease AND decrease ))*.