I remembered that a fellow Memriser posted a terrific tip some time ago for locating specific words in individual courses which may help. Luckily, I bookmarked it.
Here’s the relevant bit from the earlier post:
"I use a google site search to find the levels. For example, I was trying to find the levels of “shop” in a Finnish course with two different responses.
In the google search box I typed:
Three levels show up in the results.
For any course, type “site:” followed by the address of the webpage of the course (with no spaces and without “https://www.”, then a space and then the word you are looking for. Google will search the webpage and linked webpages for you."
I just tried it on one of my courses that has 76 levels and it still works. Here’s a screenshot of what it gives you: