I'm looking for advice on how to identify themes/topics in text survey answers. I have a 4 question survey where all the answers are text. The questions cover Literacy, Indigenous Learning, Mental Health, and Other Considerations.
I'm newish to text mining so I've used the Tidytext book to help get me get started. Currently, I'm doing a Bigram analysis to identify frequent word pairs within each answer and using those bigrams as themes. Because of my limited experience so far, I'm not sure if this is sufficient or not.
Besides Bigram analysis, are there other methods people would recommend based on what I'm trying to accomplish?