Hey @gianghl1983,
I can’t figure out what you aim to do exactly, can you give an example to explain more ?
Regards
Here is what I mean: As I am typing on WP’s editor, after typing a word (e.g test), the Tooltipy will check its tooltips database for typed word and give a tooltip for typed words. So, based on this tooltip I can choose a better word for my writing.

Interesting idea 🙂
I will see if I can do something similar and will be back here to let you know
Thanks
You can refer this plugin: https://tah.ww.wp.xz.cn/plugins/better-writing/
It has same function as I mentioned which called “Preferred Terms”.
In the backend you cand define these terms:

It shows suggestion on typing in editor:
