Why cannot find required text from knowledge base in Dify?

[letri175]

Self Checks

• I have searched for existing issues search for existing issues, including closed ones.
• I confirm that I am using English to submit this report (我已阅读并同意 Language Policy).
• [FOR CHINESE USERS] 请务必使用英文提交 Issue，否则会被关闭。谢谢！:）
• Please do not modify this template :) and fill in all the required fields.

1. Is this request related to a challenge you're experiencing? Tell me about your story.

I'm trying to use a chatbot workflow to retrieve specific data from a knowledge base using knowledge retrieval. However, some data cannot be found for unknown reasons. What could be causing this issue, and what are potential solutions?

2. Additional context or comments

No response