Searching tagged content in TechScreen

I have tagged content in TechScreen (solutions, challenges), and after some time now want to get an overview. It should be possible in a simple way to browse content in Techscreen by - getting a list of all tags, or my own tags - selecting one of this tags and get a list of the content having a certain tag Currently I see only the possibility to select a tag from the tag cloud (which is very large).
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