Perhaps you should try some spelling variations:
"co sach dao le loi dung phuong dinh" » "co sach dao le loi dung phuong binh", "co sach dao le loi dung phuong linh", "co sach dao le loi dung phuong trinh", "co sach dao le loi dung thuong dinh", "co sach dao le loi bang phuong dinh", "co sach dao le loi dung chung dinh", "co lanh dao le loi dung phuong dinh", "co sach dao le noi dung phuong dinh", "co sach dao le hoi dung phuong dinh", "co sach dao le loi cung phuong dinh", "cuon sach dao le loi dung phuong dinh", "hoc sach dao le loi dung phuong dinh", "co sach do le loi dung phuong dinh", "co sach dao ve loi dung phuong dinh", "co sach hao le loi dung phuong dinh", "co sach dao la loi dung phuong dinh"
"bo sach cua le nguoi bana phuong minh" » "bo sach cua le nguoi bang phuong minh", "bo sach cua le nguoi ban phuong minh", "bo sach cua le nguoi ban huong minh", "bo sach cua le nguoi bana phuong binh", "bo sach cua le nguoi bana phuong linh", "bo sach cua le nguoi bana phung minh", "bo sach cua le nguoi benh phuong minh", "bo sach cua le nguoi san phuong minh", "bo mach cua le nguoi bana phuong minh", "bo cach cua le nguoi bana phuong minh", "bo sac cua le nguoi bana phuong minh", "bo sach cua ly nguoi bana phuong minh", "bo sach cua lam nguoi bana phuong minh", "bo sach cua den nguoi bana phuong minh", "hoc sach cua le nguoi bana phuong minh", "bo sach cua te nguoi bana phuong minh", "bo sach cua he nguoi bana phuong minh"

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: (("co sach dao le loi dung phuong dinh") or ("bo sach cua le nguoi bana phuong minh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("co sach dao le loi dung phuong dinh") OR ("bo sach cua le nguoi bana phuong minh")).
• Removing quotes may allow a broader search: (( co sach dao le loi dung phuong dinh ) or ( bo sach cua le nguoi bana phuong minh )).
• Adding a wildcard symbol may retrieve word variants: (("co sach dao le loi dung phuong dinh") or ("bo sach cua le nguoi bana phuong minh"))*.