Searching a UTF8 string with special characters

Ok, so I have a collection, Users, that goes like:

[
 {
  name: 'André Alçada Padez',
  ...
 }, 
 ...
]

I want to find my user, in that collection, using the filter:

db.users.find({name: /andre/i})

or

db.users.find({name: /alcada/i})

how can i let mongo know, that "c" can be a "ç" or "e" can be a "é"?

thanks