Perhaps you should try some spelling variations:
decrease further » increase further (Expand search), disease further (Expand search), decrease the (Expand search)
further decrease » further increase (Expand search), faster decrease (Expand search), the decrease (Expand search)
decrease tanning » decreased running (Expand search), decrease walking (Expand search), decreases handling (Expand search)
tanning process » training process (Expand search), planning process (Expand search), turning process (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), can decrease (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease further decrease tanning process ) OR ( decrease that decrease NOT decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease further decrease tanning process ) OR ( decrease that decrease not decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease further decrease tanning process ) OR ( decrease that decrease not decrease ))*.