Is it doesn't work - or i'm too stupid for ...
Put this into search
user:me is:answer score:0 and you'll get all your zero score answers.
It is possible to use multiple IDs and apply simple filters
user:A user:B is:question ..., but how to search for my answers for a specific user?
user:me is:answer <author>:<userid> or
user:me is:answer user:ID is:question ...