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

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