Perhaps you should try some spelling variations:
"decrease acute infection" » "decrease mouse infection" (Expand Search)
"decrease site infection" » "decrease i infection" (Expand Search), "decrease hiv infection" (Expand Search), "decrease site selection" (Expand Search), "decrease rice infection" (Expand Search), "decreased since infection" (Expand Search)
"decrease i infections" » "decrease i infection" (Expand Search), "decrease 2 infections" (Expand Search), "decrease _ infections" (Expand Search), "decreases _ infections" (Expand Search), "decreased _ infections" (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: (("decrease i infections") OR ((("decrease site infection") OR ("decrease acute infection"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"decrease i infections\") OR (((\"decrease site infection\") OR (\"decrease acute infection\"))))".
• Removing quotes may allow a broader search: (( decrease i infections ) OR ((( decrease site infection ) OR ( decrease acute infection )))).
• Adding a wildcard symbol may retrieve word variants: (("decrease i infections") OR ((("decrease site infection") OR ("decrease acute infection"))))*.