Place a bucket underneath the pipes to catch any water that may drain out. The trap is the curved pipe that dips below the horizontal and vertical pipes.  Try to unscrew PVC pipes by hand. If you can't unscrew the pipes by hand, then use a pipe wrench or channel locks to loosen the connections. Check the trap for clogs and clean the trap if needed.  If you find the clog in the trap, reattach the trap. Turn on the hot water and see if the sink drains. If the sink is still clogged, then follow the next steps to use the cable auger. Push the end of the cable auger into the stub pipe until the auger meets resistance. Tighten the lock screw. Push forward as you do this to guide the auger deeper into the pipe.  If the cable catches on something, then turn the handle counterclockwise and pull the auger back. If the auger meets resistance again, continue pulling the cable out and cranking the handle clockwise until the cable catches on the clog. Reattach the horizontal pipe and the trap. Do not tighten the plastic parts too much or they may crack. If the water runs slowly, then fill up the sink part of the way and use a plunger to dislodge the remains of the clog.

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Write a summary of the previous text in Vietnamese:
Mở hộc tủ bên dưới bồn rửa. Tháo ống xi-phông. Dốc nước trong ống xi-phông vào xô. Tháo ống ngang nối giữa ống xi-phông và ống thoát nước âm tường. Kéo ra một đoạn dây cáp dài khoảng 45 cm từ ống thoát nước trong tường. Quay tay quay theo chiều kim đồng hồ. Rút dây cáp ra khỏi ống thoát nước âm tường. Mở vòi nước nóng để kiểm tra xem bồn rửa đã thoát nước chưa.