Perhaps you should try some spelling variations:
decrease invariant » decreases ovarian (Expand search), decreased ovarian (Expand search)
invariant objects » invariant sets (Expand search), invariant moments (Expand search), invariant tests (Expand search)
decrease statins » disease statins (Expand search)
statins decrease » statins increase (Expand search), skins decrease (Expand search), strain 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 _ decrease to decrease ) OR ( decrease statins decrease invariant objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease to decrease ) OR ( decrease statins decrease invariant objects ))*.