In fact, "poder tener" and "tener" are totally different used in Spanish. "poder tener" may be literally translated into English as "to be able to have". It express a possibility of having something. However, the verb "tener" by itself can be used into several kind of structures such as: "querer tener", "deber (conjugued)/debería tener", and so on. For example:
~Espero poder tener suerte mañana = I hope I can be able to have good luck tomorrow
~Tu tienes muchos perrors = You have many dogs.
~ Deberías tener paciencia = Yo should be patient
~Esto debe tener explicación = It must have an explanation.
If you have any other doubt, feel free to send me a message and I can explain it to you deeper and with more examples.
I hope I'd helped you!