1, Little thieves are hanged, but great ones escape. 

2, War makes thieves, and peace hangs them. 

3, There is honour among thieves.

4, Friends are thieves of time.

5, All are not thieves that dogs bark at. 

6, When rogues (or thieves) fall out, honest men come by their own. 

7, There's honour among thieves.

8, There is no wealth like unto knowledge, for thieves cannot steal it. 

9, As thick as thieves.

10, The thieves demanded money from the passengers.

11, The thieves stole a purse containing banknotes.

12, Thieves and other criminals often consort together.

13, Don't tempt thieves by leaving valuables clearly visible.

14, The thieves divvied up the loot.

15, Thieves carried off the farmer's sheep during the night.

16, Thieves stole jewellery worth over ￡10 000.

17, The thieves delivered the passengers of their money.

18, The thieves were caught in a police trap.

19, The thieves replaced the original painting with a copy.

20, The thieves burst the door in.

21, The thieves stole ￡400 in cash.

22, How did the thieves gain entry into the building?

23, The police set a trap for the thieves.

24, Thieves often target unprotected vehicles.

25, The thieves not only stole the jewels,(http://sentencedict.com/thieves.html) but smashed up most of the valuable furniture in the room.

26, The thieves broke into the bank and stole the safe.

27, It's more than likely that the thieves don't know how much it is worth.

28, Thieves broke into the offices and stole $150,000's worth of computer equipment.

29, A police clampdown on car thieves hit a snag when villains stole one of their cars.

30, A post office was broken into last night, and the thieves got away with £120 000.