Perhaps you should try some spelling variations:
decrease venation » decrease predation (Expand search), decrease prevention (Expand search), decrease migration (Expand search)
venation patterns » vegetation patterns (Expand search), migration patterns (Expand search), selection patterns (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (Expand search)
decrease flow » decreases flow (Expand search), decrease low (Expand search), decrease food (Expand search)
flow decrease » flow increase (Expand search), to decrease (Expand search), not decrease (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease rate decrease flow decrease ) OR ( decrease NOT decrease venation patterns ))~.