Do I can use photos of Adobe stock in more than design if I still learn and practice and put the designs on behance?
I don't understand your question. Perhaps you should post in your native language and allow us to use the translate function.
If I design social media posts as my portfolio on Behance, do I can use photo of Adobe stock in more than design
I believe, that you, the licensee, can use the Adobe Stock asset in multiple designs for your own use; however, you cannot distribute that asset to anyone else.
This is my opinion and cannot be regarded as legal advice.
You can use a stock photo more than once, but only for the same customer. You can be considered as your customer, if the design is for your own use.
Look here for more information on licensing: https://community.adobe.com/t5/stock/links-for-licensing-terms/td-p/11366788
(Disclaimer: As always with licensing, this is my interpretation of the rules. I think they are correct and advice is based on reading and interpreting the licence terms and on fair use for both the buyer and the artist/stock company, but I cannot rule out that my interpretation is wrong. I'm not an Adobe employee).