Hello!! Can you recommend dramas that has many episodes. 30 plus episodes but maximum of 45 to 50 episodes only.. I currently watching Smile You. Is it good? Family dramas is okay with me but not a fan of history dramas. 

TNX A LOT!! :)

Yoona's Street. The title says it all. It's an ensemble drama about people living under the same roof. The titular character is a pickpocket, and her acquaintances and some of the boarding house dwellers have dabbled in criminal activities as well.
Try Lady and Liar, it was such a nice drama, i did not think it was that great. You will be challenge to watch every episode of this drama.
Battle of Changsha and lady&liar are both Chinese so don't fit Korean recommendations.
Smile, you is one of my all-time favourite dramas so stick with it.

I've heard good things about Giant and Ojakyo bothers but I've not seen either.

A few long dramas I have watched and can recommend:
The best Lee soon shin - 55 episodes
Full house take 2 - 32 episodes
Five fingers - 30 episodes
Heard it through the grapevine - 30

Another two but not quite 30-

Bridal mask
Shining inheritancbithe 28 episodes
I can only think of SIX FLYING DRAGONS
Boss & Me - 33 episodes
Can You Hear My Heart - 30 episodes
Come! Jang Bori - 52 episodes
I Really Really Like You - 34 episodes
Jewel in The Palace - 54 episodes
King of Baking - 30 episodes
Queen Seon deok - 62 episodes
Wonderful Days - 50 episodes
Ojakgyo Brothers - 58 episodes
i suggest you Empress Ki and Boss & Me, and I strongly recommend Queen Seon Deok
nirvana in fire

jewel in the palace

new tales of gisaeng

lady &liar

heard it through the grapevine