Perhaps you should try some spelling variations:
decrease vegetation » increased vegetation (Expand search), dense vegetation (Expand search), decrease migration (Expand search)
vegetation patterns » migration patterns (Expand search), interaction patterns (Expand search), methylation patterns (Expand search)
decrease drugs » disease drugs (Expand search), release drugs (Expand search), increase drug (Expand search)
drugs decrease » drugs release (Expand search)
decrease loss » decrease costs (Expand search), decrease low (Expand search), decrease blood (Expand search)
loss decrease » loss decreases (Expand search), to decrease (Expand search), not decrease (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to 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 drugs decrease of decrease ) OR ( decrease loss decrease vegetation patterns ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease drugs decrease of decrease ) OR ( decrease loss decrease vegetation patterns ))*.