Bluetooth Contacts - Telephone App

Hi all
i have an autompumkin android 4.4 device.
i have problems with my contacts, they are synced but not all
so i think there is an limitation for the contacts.
my question is how do you handle your contacts? can i sync the contacts with google? how can i use them with the telephone app
is there an alternative telephone/Dialer app i can use?

thanks
bg from austria