Perhaps you should try some spelling variations:
"so sanh ca ke nguoi nung chuong trinh" » "so sanh ca ke nguoi nung cong trinh", "so sanh ca ke nguoi nhung phuong trinh", "so sanh ca ke nguoi dung chung trinh", "so sanh ca ke nguoi dung thuong trinh", "so sanh ca ke nguoi nuoc chuong trinh", "so sanh ca le nguoi nung chuong trinh", "so sanh ca ky nguoi nung chuong trinh", "so sanh ca me nguoi nung chuong trinh", "do sanh ca ke nguoi nung chuong trinh", "so danh ca ke nguoi nung chuong trinh", "so anh ca ke nguoi nung chuong trinh", "so sanh va ke nguoi nung chuong trinh", "so sanh cac ke nguoi nung chuong trinh", "so sanh ca ve nguoi nung chuong trinh"
"so sach cha ke nguoi muong duong tien" » "so sach cha ke nguoi tuong duong tien", "so sach cha ke nguoi cuong duong tien", "so sach cha ke nguoi muong doong tien", "so sach cha ke nguoi muong duong vien", "so sach cha ke nguoi muong dong tien", "so sach cha ke nguoi muong phuong tien", "so sach nha ke nguoi muong duong tien", "so sach che ke nguoi muong duong tien", "so sach ha ke nguoi muong duong tien", "so sach cha le nguoi muong duong tien", "so sach cha ky nguoi muong duong tien", "so sach cha me nguoi muong duong tien", "bo sach cha ke nguoi muong duong tien", "co sach cha ke nguoi muong duong tien", "hoc sach cha ke nguoi muong duong tien", "so sach kha ke nguoi muong duong tien"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("so sach cha ke nguoi muong duong tien") or ("so sanh ca ke nguoi nung chuong trinh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("so sach cha ke nguoi muong duong tien") OR ("so sanh ca ke nguoi nung chuong trinh"))*.
• Removing quotes may allow a broader search: (( so sach cha ke nguoi muong duong tien ) or ( so sanh ca ke nguoi nung chuong trinh ))*.