I have added cards as well.
But somehow this card still does not appear.
Update your Anki to latest version 2.1.42
Regarding your original question, assuming you did add them to the deck you highlighted, you may have reached your daily limit.
https://faqs.ankiweb.net/anki-is-not-showing-me-all-my-cards.html
Are you sure you add it into this sub deck?
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Sorry, I think I wrong, I added another deck. Thanks for your help