Search engine settings contain only DDG. I could find no way to add other search engines (yahoo, google, bing, etc.) (this may be my fault/problem, I've been known to be dense before

Restarted FF with my old ~/.mozilla. Still only DDG (of the normal, expected default search engines)...but one that I added under FF 31 ESR (youtube) showed up.
So:
1) Is this the expected configuration for FF 38 ESR on Salix (on other distros FF configurations (38/39) there were the standard search engines).
2) What did I miss in "how to add search engines to the menu" (i.e., help me be less dense)?
EDIT: OK, I figured out how to add engines like youtube (small + sign in the glass), but still can't add things like yahoo/bing/google).