Ventura Special Characters

I know Ventura has changed how you enter accented characters: press and hold. Which is OK, I guess. But they took away the research tool from the keyboard viewer/emoji thingie which allowed you to search for odd special characters, such as, say versicle or response, or even ễ (a Vietnamese character I sometimes need that does not appear with press and hold on the letter e, used on the common Viet name Nguyễn).

I understand moving to new ways of doing things, but when they take away useful and required things in the process, this is good--.

How does one do research to find the full Unicode set, like you used to be able to do (albeit with difficulty). How does one enter such a Unicode code even if it can be found researching the web?