Searching for partial file names might produce an empty result set

Steps to reproduce:

1. Open Bitbucket
2. Search for a partial file name (e.g.: HibernateCommitDiscussionCommentAnchor where full name is HibernateCommitDiscussionCommentAnchorDAO)

Expected result:

All mentions of HibernateCommitDiscussionCommentAnchorDAO are listed

Actual result: