tiger bone glue ☊ 
cao hổ cốt ☊ mug up, bone up on ☊ học gạo ☊ dead tired, bone tired ☊ mệt rũ ☊ to bone up, cram for an examination, study very hard ☊ nấu sử sôi kinh ☊ to put a bone back in place, reduce a bone ☊ nắn xương ☊ to bone up, cram for ☊ sôi kinh nấu sử ☊