You can move parts of some apps to the card - after it's installed to internal storage. (Android was never intended to run apps from the external card.)
If the phone doesn't have much storage and you have a large card, you might want to root the phone and use
External 2 Internal SD (Root) to swap mounting, so the card is your "internal" storage and the NVRAM in the phone is your "external card". (Everything in Linux is a file, so anything can be mounted as anything.)