Combine two Earfun Air TW200 buds that that were initially parts of two different sets. Possible and how?

I have two sets of Earfun Air TW200. Of the first set the left bud is dead (not charging, no lights at all) because it was dropped in water but the right one connects and works just fine. In the second set only the left one connects properly. The right on tries (it keeps saying connecting) with blue lights blinking and all but does not succeed. Can I salvage the working buds and combine them to one working set? And how, please? Thanks