Perhaps you should try some spelling variations:
soon materiales » con materiales (Expand search), book materiales (Expand search), sordos materiales (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
decrease soon » decrease food (Expand search), decrease on (Expand search), decrease sod (Expand search)
decrease akt » decrease at (Expand search), decrease and (Expand search), decrease after (Expand search)
akt decrease » and decrease (Expand search), not decrease (Expand search), any decrease (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (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 to decrease akt decrease ) OR ( decrease their decrease soon materiales ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease to decrease akt decrease ) OR ( decrease their decrease soon materiales ))*.