Perhaps you should try some spelling variations:
"c largest decrease" » "c largest decreases" (Expand Search), "c larger decrease" (Expand Search), "c marked decrease" (Expand Search), "_ largest decrease" (Expand Search), "c large decrease" (Expand Search)
"ct values decrease" » "ct values increased" (Expand Search), "_ values decrease" (Expand Search), "i values decrease" (Expand Search)
"c age increased" » "c rate increased" (Expand Search), "c use increased" (Expand Search), "c large increases" (Expand Search), "_ age increased" (Expand Search), "g age increased" (Expand Search), "9 age increased" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("ct values decrease") OR ((("c largest decrease") OR ("c age increased"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ct values decrease\") OR (((\"c largest decrease\") OR (\"c age increased\"))))".
• Removing quotes may allow a broader search: (( ct values decrease ) OR ((( c largest decrease ) OR ( c age increased )))).
• Adding a wildcard symbol may retrieve word variants: (("ct values decrease") OR ((("c largest decrease") OR ("c age increased"))))*.