Perhaps you should try some spelling variations:
connection strength » connection length (Expand search), connections strengthened (Expand search), function strength (Expand search)
strength decrease » strength increase (Expand search), strength degree (Expand search), strength decline (Expand search)
decrease decrease » decrease release (Expand search), decreases disease (Expand search), disease decreases (Expand search)
decrease after » disease after (Expand search)
decrease levy » decreased level (Expand search), decreased left (Expand search), decreases leaf (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 OR decrease levy processes ) OR ( connection strength decrease decrease after ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease OR decrease levy processes ) OR ( connection strength decrease decrease after ))*.