Perhaps you should try some spelling variations:
decrease burden » disease burden (Expand search), decrease further (Expand search)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
burden objects » buried objects (Expand search), wooden objects (Expand search), golden objects (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), of decree (Expand search)

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

• Removing quotes may allow a broader search: (( decrease their decrease to decrease ) OR ( decrease of decrease burden objects ))~.