The image shows a document with four numbered sections, each containing text in Vietnamese. The document appears to be a list or a checklist, possibly related to medical or health-related topics. Here is the content from the document:

1. **Trường hợp xuất hiện**
   - **Translation:** Symptoms of occurrence

2. **Trường hợp loại trừ**
   - **Translation:** Symptoms of exclusion

3. **Trường hợp liên quan**
   - **Translation:** Symptoms related

4. **Trường hợp không liên quan**
   - **Translation:** Symptoms unrelated

The document seems to be discussing different types of symptoms, with the first section focusing on symptoms that indicate an occurrence, the second on symptoms that need exclusion, the third on symptoms that are related, and the fourth on symptoms that are unrelated.