Perhaps you should try some spelling variations:
"significantly weaker decrease" » "significantly greater decrease" (Expand Search), "significantly related decrease" (Expand Search), "significantly smaller decrease" (Expand Search), "significantly teer decrease" (Expand Search), "significantly water decreases" (Expand Search)
"significantly better decrease" » "significantly greater decrease" (Expand Search), "significantly higher decrease" (Expand Search), "significantly lower decrease" (Expand Search), "significantly teer decrease" (Expand Search), "significantly between decreased" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("significantly weaker decrease") OR ("significantly better decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"significantly weaker decrease\") OR (\"significantly better decrease\"))*".
• Removing quotes may allow a broader search: (( significantly weaker decrease ) OR ( significantly better decrease ))*.