The Bio search in Discover enables you to search an influencer's bio description by searching keywords and/or phrases. You can use this functionality alone or in combination with the post search to help you identify the most relevant influencers quickly and efficiently.
The bio search differs from the Role and Field search as these are based on general queries relating to those roles or fields, whereas the bio search allows you to search for any individual keyword.
Much like most conventional searches, you can use Boolean operators (AND, OR, (), "", etc) to make your search as general or specific as you want. You can find the most common ones and examples on how to use them here.
Once your search is ready, you can press either blue search icon to start your identification.