I wrote a Data Explorer queryData Explorer query that does this. You can search the body of answers given to your questions. As the data explorer gets updated weekly, this is a workable solution till advanced search gets an update (if).
It can also handle upper and lower limits for vote count of answers.
Update :
Now also handles accepted status of answers!
Update #2:
Now question tags can also be searched!
Update #3:
Search within your answers to your questions! (that is, self answers or self-answered questions)