Perhaps you should try some spelling variations:
decrease child » disease child (Expand search), decrease hiv (Expand search), decrease cell (Expand search)
that decrease » that increase (Expand search), that increases (Expand search), not decrease (Expand search)
child subject » child subjective (Expand search), child project (Expand search)
decrees that » devices that (Expand search), trees that (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or decrease (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease on decrease on decrease ) OR ( decrees that decrease child subject ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decrease on decrease ) OR ( decrees that decrease child subject ))*.