How to translate the user profile page in commerce kickstart
The solution described in issue #1937982 has been used to solve an issue similar to yours. That issue includes a .PO file to handle at least these strings:


Primary billing address
Primary shipping address


If that would work in your case also, you can probably use the same solution by adding 2 similar lines for these 2 other strings (you may have to verify if it is case sensitive or not):


HELLO
RECENT ORDERS