Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh hinh » hanh chinh, hanh tinh, hanh dinh
dong dong » dong duong, cong dong, dung dong
dong luan » dung luan, tong luan, dong xuan
ho chieu » theo chieu, hoc thieu, mot chieu
hinh cua » chinh cua, sinh cua, tinh cua
cua dong » chua dong, cua cong, cua dang
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) sach - hanh hinh cua dong dong luan ((phan cac) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh hinh cua dong dong luan ((phan cac) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh hinh cua dong dong luan ((phan cac) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh hinh cua dong dong luan ((phan cac) or (phan dau))*.