...
In addition, in the Access rights tab, and then in the Translation memory section of the user settings, you can specify the customers to whom that particular user shall have access, use user language combinations only or customize specific TM access rights.
...
Guidelines
Go to the TM → Manage section.
...
Select the Account and Customer (you can display translation memory for all customers), the source and target languages and a particular Project. (Again, you can choose all of them). Then click the Search button. You can also search for a translation memory unit on the basis of the words it contains, the ID in the database or the source file ID.
...