Perhaps you should try some spelling variations:
treated sediment » related sediment, streambed sediment, related sediments
dated sediment » dated sediments, rafted sediment, water 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 (treated sediment)).
• Adding a wildcard symbol may retrieve word variants: pets decrease ((dated sediment) or (treated sediment))*.