As there is no direct word for Grandpa in the Samoan language, Tama (Father) is always used, so I would say:
Fa'afetai, Tama.
thank you very much
come here now
Fa'afetai lava
Fa'afetai lava
Thank you
Thank you very much for the letter you were able to write to me.
(I) thank you.
thank you
Thank you
If you mean "manaia", then it translates to, beautiful, gorgeous, sophisticated, easy to the eye, lovely
عافيت باشد (Afiat bashad)
"Tack så mycket" is the translation of 'Thank you' from English to Swedish.