both of his two legs => both of his legs

All the kids are lost from their schools and they do not want to go.
=> All the kids dropped out of schools and they don't want to go back.

One patient call Little Shanshan was advertised by the doctors who promote the Xiao Procedure is not an successful operation either.
=> One patient called Little Shanshan advertised by the doctors as a successful case is actually a failure too.

About the family economy situation of the patients
=> As for the patient family's financial situation

but the parents are very angry to the hospital,
=> ...very angry at...

They want to lawsuit the hospital is not only for returning of their costs.
=> The want to sue the hospital not just for recouping their expenses.

The one in Guangyuan also told to her that they want to lawsuit the Procedure is not for the operation fee either but they need the justice is done.
=> The one in Guangyuan also told her that they want to sue the hospital not just to recover the operation fee, but want the justice to be done.

a coal mall worker and is lay-off => a coal miner and is laid off

has no heater in this cold winter => ... no heating...

His father raises 30 pigs that why he needs to save the heater for the piggy cubs, otherwise they will get sick in the cold.
=> The family needs to save the heating for the pigs they raise.

wanted to make the justice done as well
=> wanted the justice to be done as well.