You spawn in a forest. From the spawn turn right and cross the river and soon you will see the desert. Continue straight ahead, just crossing the desert, it will take a lots of time. Then soon, the main section of this seed will appear. That is two desert temples.
Come inside the temple, at the center of the temple have lots of colored blocks (orange and blue). Then drop down to the bottom (careful with the pressure plate, maybe some hidden TNTs in there). Your reward:
- 7 gold ingots
- 4 iron ingots
- 2 emeralds
- 4 diamonds
- 23 bones
- 18 rotten flesh
More details in the video below.
https://www.youtube.com/watch?v=azaLZrT5pEY
Seeds : 738789875 Work in PE ver0.14.0+
If you explode the tent under the sandstone then you will find a mineshaft