Perhaps you should try some spelling variations:
rafted sediment » grained sediment, related sediment, treated sediment
great decrease » great increase, great encrease, great degree
dated sediment » dated sediments, water sediment, related sediment

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

• If you are trying to use Boolean operators, they must be ALL CAPS: great decrease ((rafted sediment) OR (dated sediment))*.