Perhaps you should try some spelling variations:
reflectance decrease » reflectance spectrale (Expand search), tolerance decrease (Expand search), reflectance response (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)
red reflectance » and reflectance (Expand search), leaf reflectance (Expand search), beam reflectance (Expand search)
decrease after » increase after (Expand search), disease after (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)

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 that decrease decrease processes ) OR ( red reflectance decrease decrease after ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease that decrease decrease processes ) OR ( red reflectance decrease decrease after ))*.