Perhaps you should try some spelling variations:
"apoptotic rate decrease" » "apoptosis rate decrease" (Expand Search), "apoptotic rate increase" (Expand Search)
"apoptotic data decrease" » "apoptosis data decrease" (Expand Search), "apoptotic data increase" (Expand Search)
"apoptotic water decreases" » "apoptosis water decreases" (Expand Search), "apoptotic water increases" (Expand Search), "apoptotic water decreased" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("apoptotic rate decrease") OR ("apoptotic data decrease"))) OR ("apoptotic water decreases"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"apoptotic rate decrease\") OR (\"apoptotic data decrease\"))) OR (\"apoptotic water decreases\"))".
• Removing quotes may allow a broader search: (((( apoptotic rate decrease ) OR ( apoptotic data decrease ))) OR ( apoptotic water decreases )).
• Adding a wildcard symbol may retrieve word variants: (((("apoptotic rate decrease") OR ("apoptotic data decrease"))) OR ("apoptotic water decreases"))*.