Perhaps you should try some spelling variations:
decrease variant » decreases ovarian (Expand search), decreased ovarian (Expand search), decrease asian (Expand search)
decreasing costs » decreasing cost (Expand search), decreasing rest (Expand search), decrease costs (Expand search)
variant pattern » invariant pattern (Expand search), variate pattern (Expand search), ovarian patterns (Expand search)
costs decrease » loss decrease (Expand search), not decrease (Expand search), cells decrease (Expand search)
of decreasing » of increasing (Expand search), by decreasing (Expand search), in decreasing (Expand search)
decrease of » decrease in (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 of decreasing costs decrease ) OR ( decrease NOT decrease variant pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of decreasing costs decrease ) OR ( decrease NOT decrease variant pattern ))*.