many people say : thuh uhther or thuther

Not necessarily, pronouncing them as two separate words is completely fine as well. "thee/dee-oh-ther" It doesn't have to be wrong, some people might say it the way you mention.

http://forvo.com/word/how_the_other_half_lives/#en http://forvo.com/word/on_the_other_hand/#en

You're welcome :)

That's interesting.))