Not yet sorry. Features are priorities by the number of votes they receive on a public Trello board [1]. There's a card [2] for search (which is not the highest-voted feature). But it will definitely come.

[1]: https://trello.com/b/WpIUiPAd/fman

[2]: https://trello.com/c/ZtBmsZtA/98-file-search