The Question and Answer section for The Book Thief is a great resource to ask questions, find answers, and discuss the novel.
Hans is a valuable human being because he is loving, understanding, and has a generous nature. He is the perfect foster father for Liesel, who is in desperate need of a parent with these traits.
I'm not sure what you mean by "word" what word or words are you referring to?
The section in which Rudy and Liesel run away is Another Quick Translation. This can be found on Page 130.