emoji search and better searching in dms/servers

I would love to be able to search emojis because sometimes you dont remember what someone said but you do remember what emoji did they use, so it would be good if we were able to search emojis.

And sometimes, for example, I say "Hiiii" instead of "Hi" and when I want to search for that message, I'm not able to because I have to remember how many "i"s I typed. It would be so good if we search "Hi" and then it shows up.