Perhaps you should try some spelling variations:
diagenetic processes » pedogenetic processes (Expand search), diagnostic process (Expand search)
decrease diagenetic » decrease phylogenetic (Expand search)
decrease rapid » decrease lipid (Expand search), decreased ratio (Expand search), decrease and (Expand search)
rapid decrease » rapidly decrease (Expand search), rapid increase (Expand search), ratio decrease (Expand search)
decrease at » decrease and (Expand search), decrease in (Expand search), decrease of (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), and 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: "(( decrease at decrease diagenetic processes ) OR ( decrease _ decrease rapid decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease at decrease diagenetic processes ) OR ( decrease _ decrease rapid decrease ))*.