How to avoid Full Table Scans from this query

 We have a query which is causing full table scans on some of the larger tables we have in our database All the columns of all tables on which we have joins are already been indexed but still full table scans are happening on all those tables

here is the query and the execution plan

SELECT
hdr.isf_seq_nbr, MIN(ct.container_nbr), hdr.importer_acct_cd, evtlg.event_date, hdr.status_cd,
ar.action_reason_descr, MIN(bl.master_scac_cd), MIN(bl.master_bill_nbr), MIN(bl.house_scac_cd),
MIN(bl.house_bill_nbr), hdr.isf_tx_nbr, hdr.booking_nbr, hdr.po_nbr, hdr.scac_cd, hdr.vessel_name,