Feature request: text search is really needed

Hi there! I like xfce4-notes; I use it every day! Could someone please add a text search function?

In one note, I've recorded many ffmpeg media conversion commands for different needs, different files, and different parameters. Over two or three years, I've accumulated a total of 162 lines. Now, when I want to find the command line using a specific parameter or for a specific file, I find that the lack of a text search function makes it very difficult to find the information.

Thanks.