Edit “Read more…” ???

Hello Di Business. I come from Vietnam. Di Business is great, I love Di Business.
I want to edit “Read more …” (b?n có th? xem hình ?nh t?i ?ay: https://www.facebook.com/bkvietcom/photos/a.419260901858338.1073741829.416194878831607/451505038633924/?type=3&theater )
can you help me get?
How to edit it? Thank you very much admin.

The page I need help with: [log in to see the link]