Perhaps you should try some spelling variations:
"so sach nha ly nguoi dong phuong trinh" » "so sach nha ly nguoi dong chuong trinh", "so sach nha ly nguoi dong cong trinh", "so sach nha ly nguoi dong huong tran", "so sach nha ly nguoi duong phuong trinh", "so sach nha ly nguoi dung phuong trinh", "so sach nha ly nguoi dong huong trinh", "so sach nha ly nguoi cong phuong trinh", "so sach nha ly nguoi vong phuong trinh", "so sach nha le nguoi dong phuong trinh", "so sach nha tay nguoi dong phuong trinh", "so sach nha lam nguoi dong phuong trinh", "bo sach nha ly nguoi dong phuong trinh", "co sach nha ly nguoi dong phuong trinh", "hoc sach nha ly nguoi dong phuong trinh"
"so sanh nha ly nguoi dong phuong tien" » "so sanh nha ly nguoi duong phuong tien", "so sanh nha ly nguoi dung phuong tien", "so sanh nha ly nguoi dong huong tien", "so sanh nha ly nguoi cong phuong tien", "so sanh nha ly nguoi vong phuong tien", "so hanh nha ly nguoi dong phuong tien", "so danh nhan ly nguoi dong phuong tien", "so thanh nha ly nguoi dong phuong tien", "so sanh nha le nguoi dong phuong tien", "so sanh nha tay nguoi dong phuong tien", "so sanh nha lam nguoi dong phuong tien", "do sanh nha ly nguoi dong phuong tien"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("so sanh nha ly nguoi dong phuong tien") or ("so sach nha ly nguoi dong phuong trinh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("so sanh nha ly nguoi dong phuong tien") OR ("so sach nha ly nguoi dong phuong trinh")).
• Removing quotes may allow a broader search: (( so sanh nha ly nguoi dong phuong tien ) or ( so sach nha ly nguoi dong phuong trinh )).
• Adding a wildcard symbol may retrieve word variants: (("so sanh nha ly nguoi dong phuong tien") or ("so sach nha ly nguoi dong phuong trinh"))*.