Perhaps you should try some spelling variations:
significantly increased » significant increase (Expand Search)
significant shape » significant change (Expand Search), significant gap (Expand Search), significant side (Expand Search)
increased crash » increased cgas (Expand Search), increased across (Expand Search), increased risk (Expand Search)
shape decrease » shape increases (Expand Search), small decrease (Expand Search), step 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: "(( significantly increased crash ) OR ( significant shape decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( significantly increased crash ) OR ( significant shape decrease ))*.