Perhaps you should try some spelling variations:
aggressive disorders » depressive disorders, depressive disorder, recessive disorders
mail's depressive » mild depressive, manisch depressive, major depressive
mail's impressive » build impressive
non aggressive » non aggression, non progressive, more aggressive

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: (( ((mail's depressive) OR (mail's impressive)) disorder ) OR ( non aggressive disorders )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((mail's depressive) OR (mail's impressive)) disorder ) or ( non aggressive disorders ))".
• Adding a wildcard symbol may retrieve word variants: (( ((mail's depressive) OR (mail's impressive)) disorder ) or ( non aggressive disorders ))*.