Perhaps you should try some spelling variations:
rafted sediment » grained sediment, related sediment, treated sediment
dated sediment » dated sediments, water sediment, related sediment
pets decrease » its decrease, depth decrease, helps decrease

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: pets decrease ((dated sediment) OR (rafted sediment)).
• Adding a wildcard symbol may retrieve word variants: pets decrease ((dated sediment) or (rafted sediment))*.