Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hoc thieu » toc thieu, hoc hien
cong long » cong luong, cong dong, cong cong
cong thu » cong thuc, cuong thu, hong thu
long dan » long doan, cong dan, nong dan
dan phan » doan phan, dan chan, van phan
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: ((doi chieu) or (hoc thieu)) sach - thanh cong thu cong long dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) sach - thanh cong thu cong long dan phan dau*.