Perhaps you should try some spelling variations:
decreases sperm » decreased sperm (Expand search), decreases serum (Expand search), decreasing sperm (Expand search)
sperm decrease » term decrease (Expand search), speed decrease (Expand search), speed decreases (Expand search)
decrease flood » decrease food (Expand search), decrease blood (Expand search), decreases blood (Expand search)
flood problems » flow problems (Expand search), food problem (Expand search), load problems (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not 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: "(( decreases sperm decrease flood problems ) OR ( decrease toc decrease NOT decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreases sperm decrease flood problems ) OR ( decrease toc decrease NOT decrease ))*.