Hi ckarmy,

Every time that I write a letter the app suggest me movies

Our default search method supports this as the default behaviour, for example:

https://api.themoviedb.org/3/search/movie?api_key=###&query=the+d
https://api.themoviedb.org/3/search/movie?api_key=###&query=the+da
https://api.themoviedb.org/3/search/movie?api_key=###&query=the+dar
https://api.themoviedb.org/3/search/movie?api_key=###&query=the+dark
https://api.themoviedb.org/3/search/movie?api_key=###&query=the+dark+
https://api.themoviedb.org/3/search/movie?api_key=###&query=the+dark+k

The correct way is to send a Get method every time that text is changed?

You could, although most autocomplete UI's will be a little bit smarter about it and watch for gaps in typing and only send the typed text after so many milliseconds. A good example of this is the component we use here on TMDb: http://twitter.github.io/typeahead.js/

Also... Can I search movies that have released?

We don't support any additional filtering in text searches aside from year. Ie.

https://api.themoviedb.org/3/search/movie?api_key=###&query=avatar&year=2009

There is no way to exclude movies that haven't been released yet.