sezati

1. (+ do + gen.) to reach; to extend
   Kosa joj seže do struka. — Her hair reaches down to her waist.
   Dokle pogled seže, vide se samo njive. — As far as the eye can see, there are only fields.
2. (of time, + u + acc.) to date back to; to go back to
   Istorija ovog manastira seže u trinaesti vek. — The history of this monastery goes back to the thirteenth century.
3. (+ za + instr.) to reach for; to grab at
   Dete stalno seže za slatkišima na polici. — The child keeps reaching for the sweets on the shelf.

For 'to reach for something', posezati za + instrumental is more common.