After you both have calmed down, suggest a time to discuss your conflict. After a big argument, it's important you schedule time to talk to assure you are both calm going into the discussion.  Choose a time to talk where there aren't outside constrictions on time. Pick a week or weekend night when neither one of you has to work early in the morning. Aim to talk in the early evening sometime after dinner so hunger and sleepiness cannot interfere with your conversation.  If you do not live together, try to choose a place that's a neutral ground. While you might feel odd discussing your relationship in public, a neutral ground might assure no one feels uncomfortable. You can pick a place where not many people are around, like a spacious, quiet coffee shop or a public park that's not usually crowded. When discussing your conflict, use your body language to demonstrate that you are open to dialogue. This can allow the discussion to happen in a relaxed, effective way.  Make eye contact. Nod occasionally to show you are listening. Never cross your arms or do anything that makes you look tense. Try to avoid nervous tics, like fiddling with your clothing or ringing your hands.  Nod on occasion, as this gives a non-verbal indication you are listening to what is being said. When discussing your argument, use solid verbal communication as well. Your girlfriend needs to know you are open to working things out, so make sure you communicate with her effectively in the aftermath of a fight.  Be clear and concise when speaking. Do not include too many details and try to get to the point of what you're going to say. Do not interrupt your girlfriend when she's talking. Always ask if she understands what you're saying. Ask for clarification if she says anything you do not understand.   Use "I" statements. These assure that you're expressing your own feelings rather than placing objective judgment on the situation. For example, instead of saying "You overreacted about me being late and embarrassed me in front of your friends" say...

How would you rephrase that briefly using Vietnamese?
Lên kế hoạch nói chuyện. Sử dụng ngôn ngữ cơ thể cởi mở. Sử dụng tốt kỹ năng giao tiếp bằng lời. Thừa nhận cảm xúc của bạn gái. Tìm điểm bất đồng. Xin lỗi.