Perhaps you should try some spelling variations:
otological symptoms » otologic symptoms (Expand search), biological symptoms (Expand search), otologic symptom (Expand search)
decrease processes » disease processes (Expand search), decay processes (Expand search), increase process (Expand search)
decrease decrease » decrease release (Expand search), disease decreases (Expand search), decreases disease (Expand search)
symptoms decrease » symptom decrease (Expand search), symptoms depressive (Expand search), symptoms dress (Expand search)
decrease after » increase after (Expand search), disease after (Expand search)
decrease at » decrease and (Expand search), decrease in (Expand search), decrease of (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), and 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 at decrease decrease processes ) OR ( otological symptoms decrease decrease after ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease at decrease decrease processes ) OR ( otological symptoms decrease decrease after ))*.