Perhaps you should try some spelling variations:
decrease signal » increased signal (Expand search), decrease stigma (Expand search), decrease renal (Expand search)
signal decrease » signaling decreases (Expand search), signalling decreases (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), not decrease (Expand search)
in patterned » in pattern (Expand search), in patterns (Expand search), of patterned (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 AND decrease signal decrease ) OR ( decrease that decrease in patterned ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease AND decrease signal decrease ) OR ( decrease that decrease in patterned ))*.