my villagers are not surviving more then 77 why??? .. i have bought everything and i have completed all the puzzles.. why can't they live more then 77? .. also how come am not getting any triplets? any advice?

Around 77 years old is normal especialy if you play in the Nature faction. It's the everage for my tribes too, I just have 5 or 6 that died at 80, and 1 at 85!!
I don't know if I'll reach the 90 one day!

For the triplets, it's random and you'd have (highlight the following for spoiler) the level 3 of Medicine (end of spoiler)

thank you,.. so it's just being luckyt i guess.. ohh and i already bought everything inculding level 3 in medicine. so i guess that's also by luck then.. i even did some potions and nothing. but i thank you for ur response.

My villagers like to tease me. They endure until age 89 before gasping their last. May they all rest in peace.

what do u do to make them live long?

There is one thing that usually works in a well-established tribe to get the Ancient Elder award. I described the technique here.

ohh ok thank you.. i will do this once am ready to let go my tribe for a couple of days.

How many days?
I have let my 1st tribe (Nature faction) alone during one week with 88 of population, about twenty master doctors and three quaters of farmers, all the dead died because of old age and the oldest villager was 84!! in Nature Faction!! (in my other tribe that is in Magic faction, the ages are the same, the oldest was 81!)

A week is a bit much I think. The mechanism at work is that the game calculates things differently when it's playing 'catch-up' when you haven't played a while, and it's more likely for a villager to reach an older age during these times. There are no guaranteed methods, only likelihoods.

Look at the advice given for people waiting on collectibles; don't play to get a collectible, or play to 'win'. Just play because it's fun to play. Many of the achievements that are so frustrating are only a matter of time. If you don't obsess over them, they'll just turn up completed one day; the Ancient Elder award is one of these that I seem to always complete without realizing it.

I can't say for sure why you didn't get the Ancient Elder, Laurence. I've never done the technique with that many doctors and farmers; my population was more evenly divided among the occupations. Perhaps you should try experimenting with more scientists and builders in your tribe? There are random factors that affect every game, and it's not easy getting all the awards.