turn toward; turn toUsed literally for facing or turning toward a direction, and figuratively for turning to someone for help or support. จะ can indicate an intended or contemplated action.
TH: ถ้ามีปัญหา ฉันไม่รู้จะหันหน้าไปพึ่งใคร
EN: If I have a problem, I don't know who to turn to.