חננו מאתך חכמה בינה ודעת ברוך אתה ה’ חונן הדעת
The Tanya in chapter 3 explains that ‘Chochma’ means wisdom. When we utilize the wisdom for a deep and good understanding that is called ‘Bina’. ‘Daa’s’ means attachment to the source of knowledge which is Hashem.
We therefore, finish the blessings with ‘Daa’s’ because the purpose of our wisdom and knowledge is only to achieve attachment to Hashem. For that reason there are many things that humans cannot comprehend, because our brains are for the single function of attachment to Hashem, anything else is irrelevant to us.