how to navigate up and down through the Asset Library´s content groups ?

Hi All
I have a basic problem understanding how to navigate back and forth through Enscape´s Asset Library.
When I start it for the first time, I get offered the full options of all available assets.
Now, for example, if I search for trees now, the displayed selection is limited to trees which is of course ok then.
But how do I get back to all other starting theme options again? - I can't find any way and clicking "All" doesn't change anything.

At the moment I help myself by closing and reopening the Asset Library so every help is welcome

Quote from Christian Radowski

Simply clear your search. ...

so simple is that?!? thanks Christian Radowski

sorry, me again The navigation is still a mystery to me.

Once lost in any search, for example trees, I never get back to the starting default asset selection. So, how do I clean up my search?

Edit one day later
found out somehow myself, obviously only the reaction time of the library is so slow that I assumed it would not work...