How to practice one word/phrase?

I'm learning Spanish and I am not getting the hang of some words/phrases. For example: Ni siquiera. I can look up the meaning, but once in a while when I come across a question containing that term, I can't figure it out.

Is there a way in duolingo to search for all questions containing "ni siquiera" and then practice those together? I think if I go through a 100 questions with "ni siquiera" I will get the hang of it. After that I can continue to do spaced practices.

thanks in advance.