Ms-exchange 2013 audit logs retrieving in csv format not working?

I need help regarding pulling specific information from exchange 2013. The information pertains to mail-exchange audit logs. The exchange in my environment is ms-exchange 2013. Steps performed so far are:-

**step#1**

    Create test Environment on Exchange Server 2010 and Active Directory:
    Two Mailboxes for testing (with dummy email messages) (i.e., test-mailbox-1, test-mailbox-2)
    Two Active Directory Accounts for testing (testAcct01, testAcct02)
    Assign Permission to Test Mailboxes: Owner of Email Box test-mailbox-1: testAcct01, Owner of Email Box test-mailbox-2: testAcct02

**step 2**

    Enable Mailbox Auditing on the test-mailbox-1:
    Use EMS to enable mailbox auditing on mailbox: test-mailbox-1
    Commands: 
    oSet-Mailbox -Identity "test-mailbox-1" -AuditDelegate Copy,Create,FolderBind,HardDelete,Move,MoveToDeletedItems,SendAs,SendOnBehalf,SoftDelete,Update -AuditEnabled $true
    oSet-Mailbox -Identity "test-mailbox-1" -AuditAdmin Copy,Create,FolderBind,HardDelete,MessageBind,Move,MoveToDeletedItems,SendAs,SendOnBehalf,SoftDelete,Update -AuditEnabled $true
    
    Note: You must have permission for Organization Management and Record Management if you want to enable mailbox auditing.

**step#3**

    Verify that the Mailbox Auditing is Successfully enabled for mailbox: test-mailbox-1:
    Use EMS to verify the settings of mailbox auditing
    Command:
    oGet-Mailbox "test-mailbox-1" | Format-List *audit*

**step#4**

    Verify that the Mailbox Auditing is Successfully enabled for mailbox: test-mailbox-1:
    Use EMS to verify the settings of mailbox auditing
    Command:
    oGet-Mailbox "test-mailbox-1" | Format-List *audit*

**step#5**

    Perform  test activities on mailbox “test-mailbox-1” using account id: testAcct02
    For Example: Access Inbox folder, move items from one folder to another folder, delete items, read messages, send email using SendAs and SendOnBehalf, create new folder, copy email items etc. 

**step#6**

    Perform test activities on mailbox “test-mailbox-1” using “Administrator” Account.
    For Example: Access Inbox folder, move items from one folder to another folder, delete items, read messages, send email using SendAs and SendOnBehalf, create new folder, copy email items etc.

**step#7**

    Use EMS Cmdlet to retrieve Mailbox audit logs for mailbox “test-mailbox-1”
    Command:
    oSearch-MailboxAuditLog -Identity test-mailbox-1 -LogonTypes Admin,Delegate –ShowDetails -StartDate mm/dd/2014 -EndDate mm/dd/2014 | Export-Csv “c:\test-Audit-Results.csv”
    oNew-MailboxAuditLogSearch "Admin and Delegate Access" -Mailboxes " test-mailbox-1" -LogonTypes Admin,Delegate -StartDate mm/dd/2014 -EndDate mm/dd/2014 -StatusMailRecipients ali.imran@test.ru


I'm unable to go past step#7, as I see nothing in csv file. I don't know why is this? any help.