Odata Query

Hi All,

I'm trying to construct an OData query to retrieve data from Invoice entity. I can retrieve all the header records from Invoice However when I'm trying to query record from the related customer it's throwing me an error 

here is a sample of my query

dynamics.com/api/data/v8.2/invoices(1A0D1E72-2C87-E711-814D-9CDC71557F61)?$select=Name,invoice_customer_accounts.name&$expand=invoice_customer_accounts

I need 2 thing from this query 

1) all the related parent entity values. 

2) all the related child entity values.(eg= line items)

Thanks in advance