Why some part of the page is not translated?

Linguise is only able to translate content actually served by your server.
It’s not able to translate JavaScript content which is generated on the fly.

You can check the content of your original page by opening the source code of your page. Just hit the CTRL + U keys on your keyboard at the time and it should display the source code.
If in the code you don’t see the your terms in plain html, it means that Linguise won’t be abl to see it too.