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?
Some like user:me is:answer <author>:<userid> or user:me is:answer user:ID is:question ...
I may be wrong on this, but I think the search functions work with AND without combining criteria. I mean something like user:me is:answer user:ID is:question will translate into something like user = me and is_answer = true and user = ID and is_question = true. Which will always return nothing because user = me and user = id exclude each other.
But I think you can achieve what you want here: https://data.stackexchange.com/magento/queries.
First look if something similar to what you need already exists. If not, try to build one query.
