A common expression used on a variety of holidays and other occasions, corresponding, depending on the case, to happy New Year, happy birthday, congratulations, etc.
köken: Literally, “to/for many years”. Calque of Byzantine Greek εἰς ἔτη πολλά (eis étē pollá). Compare Bulgarian за много години (za mnogo godini), Albanian për shumë vjet, Serbo-Croatian за много годинa, Aromanian ti multsã anj.