Modify Sql Query ToSearch Any Part Of The Field

I need to modify the following query so that it will find John Smith or John or Smith or John Henry Smith in text20

I need to modify the following query so that it will find John Smith or John or Smith or John Henry Smith
 
 
 
SELECT Customer.CustNo, Customer.Customer, Customer.Address, Customer.City, Customer.State, Customer.ZipCode, Customer.Phone, Customer.Contact, Customer.CustOther, Customer.Art
FROM Customer
WHERE (((Customer.Customer) Like [Forms]![Customer]![text20]));

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