This is a freeware tool designed to help speed up typing, and can be used to create keyboard phrase replacement shortcuts.  You can download Auspex for free from here. You will need to extract the file by right-clicking on it and selecting "Extract Here". It will immediately be minimized to your System Tray. This will open the Auspex window. This will start the shortcut creation process. It's crucial that you don't type a phrase that you use for other things, as the shortcut will get replaced any time it is used.  A common trick is to use HTML-style tags as the phrase. For example, if you are creating a shortcut for (ಠ益ಠ), you could type &rage; into the "Replace" field. The & and ; ensure that you won't replace a real word by accident. Click the "OK" button when finished. Space, Tab ↹, or ↵ Enter to make the emoticon appear. These are the default trigger keys. You can change them using the "Triggered by" menu in Auspex when the shortcut is selected.

How would you rephrase that briefly using Vietnamese?
Tải Auspex. Khởi động Auspex. Nhấp chuột phải vào biểu tượng Auspex rồi chọn "Hiển thị (Show)". Chọn "Tập tin (File)" → "Tạo mới theo hướng dẫn(New from Wizard)". Trong trường "Bước Hai (Step Two)", nhập cụm từ bạn muốn đặt làm lối tắt. Ở trường lớn phía dưới cửa sổ, gõ hoặc dán biểu tượng cảm xúc. Gõ lối tắt và nhấn phím .