The filter buttons are located under the Search bar.
You can use the filter to choose:
Progress: Choose the progress of video content you are searching for. Choose from Not Studied, In Progress or Review.
Difficulty: Choose the difficulty of video content. Choose from the level of 1 ~ 3 stars.
Accent: Choose the accent of video content. Choose from US, UK, or AU.
Series: Choose the series of video content.
Category: Choose the category of video content. Choose from Animation, Comedy, Interview, Movie, Song, or News.
Length of content: Choose the length of video content. Choose from Short, Medium, or Long.
How to reset filter:
1. Touch the white 'X' button to reset the filter
2. Touch each filter and touch the red reset button, in the selection screen.