Well, the good news is that they probably don't affect the lens' performance significantly.
All these tiny dots can do by themselves is to reduce overall contrast by a TINY amount.
I learned Photography from my Dad starting about 70 years ago: he was a harsh teacher and a true cheapskate: he LOOKED FOR lenses with slight scratshes and spots such as you seem to have - "Talked down" the lenses to the seller and, seemingly reluctant, he'd agree to buy them "Until he could find better" and then use them for years, gloating all the while what a deal he'd gotten.
Really, all such tiny spots will do is reduce contrast in un-noticeable amounts.
Often, back in those days, good "optical glass" (Zeiss, Leitz, Goertz, Rodenstock, etc.) often had tiny bubbles in the glass itself: GOLLY could Dad talk down the prices of those "Defective" lenses.
!
This does not apply if the area surrounding the spots looks "soft' as in the posted photos - but I think that is just out-of-focus light, not a haze on the glass itself.
The spots, as such, are not worth worrying about by themselves.
--
"Measure wealth not by things you have but by things for which you would not take money"
www.flickr.com/ohlsonmh/ [email protected]