How to fetch System Notes in Credit Memo using SOAP Web Services Preferences in c#

The goal is to fetch the Fully Applied Date of a credit memo with SOAP Web Sevices, shown in the System Notes tab in NetSuite. Currently, I am able to get the credit memo record by searching requests with TransactionSearchBasic. Is that possible to return System Notes data in the response? Does TransactionSearchAdvanced help in this case? Any help is much appreciated.

CreditMemo cm = null;
TransactionSearch criteria = new TransactionSearch()
{
	basic = new TransactionSearchBasic()
	{
		type = new SearchEnumMultiSelectField() { searchValue = new string[] { "CustCred" }, @operator = SearchEnumMultiSelectFieldOperator.anyOf, operatorSpecified = true },
		tranId = new SearchStringField() { searchValue = supplierRefNo, @operator = SearchStringFieldOperator.@is, operatorSpecified = true }
	}
};
searchResponse rsp = ns.search(new searchRequest() { tokenPassport = Common.GetNSTokenPassport(), searchRecord = criteria });
SearchResult res = rsp.searchResult;
Common.HandleResponseStatus(res.status);

Service.Record[] recs = res.recordList;
IList<dynamic> payments = new List<dynamic>();
if (recs.Length > 0)
{
	cm = (CreditMemo)(recs[0]);
}
return cm;