It's not possible to search Payment methods by name, even though the helper label suggests it.

Steps to reproduce:
1. Login as admin
2. Go to Commerce -> Payment Methods
3. Create a new Payment Method:
Name: TestPaymentMethod
Identifier: TestPaymentMethodIdentifier
4. Go to Payment Methods list
5. Search for "TestPaymentMethod"

Expected:
Payment method is found

Actual:
Payment Method is not found

Note:
Searching by identifier works