了 with two verbs: What's the difference between 我去厨房找了饮料喝 and 我去了厨房找饮料喝?
The difference is what is "completed and what not" 

(A)  我去厨房找了饮料喝 ==  I went to the kitchen and found a drink.

(B)  我去了厨房找饮料喝  ==  I had gone to the kitchen to find / look for a drink.

So,  "...找了饮料喝"  ==   "...found a drink"   (Completed)

  "...找饮料喝"    ==   "...to find / look for a drink"   (not completed)