Question: I would like to use a view field (node reference to an og group, configured to display a teaser) as rendered node inside a view and display the view to anonymous users. 
Do you know how to achieve this result ?

PS. Currently I can display it for admin user but for non-admin users the view field doesn't appear.

Answer: 
If it is working for admins, but not for non admins, you problem is most likely permission. Do the users have permission to see the node? Maybe they need a special permission to see nodes via relationships?

To fix this, you need to tweak your permissions.

If you want to change the way a field is rendered, either on an entity or in a view, you need to create what's called a field formatter, which essentially is a theming function for fields.
The display suite extras module creates a lot of field specific permissions. If some fields are missing, maybe its because the ds permission was not properly set.

**View Title on Node** is a new permission, for example. In my installation it was not set for anonymous users.