Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, mot chieu
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dinh luan » dinh xuan, binh luan, dinh duan
luan hoan » luan van
dung dat » dung va, dung tai
chan tap » han tap, phan tap, chan ta

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh dinh luan hoan ((dung dat) or (huong dan)) chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh dinh luan hoan ((dung dat) OR (huong dan)) chan tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh dinh luan hoan ((dung dat) or (huong dan)) chan tap*.