Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
canh doanh » hanh doanh, chinh doanh, doanh doanh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
nhung don » nhung van, nhung bo
trinh cai » trinh tai, trinh cau, trinh cac
tinh cai » tinh hai, tinh cao, tinh ca

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh doanh cua ((nhung don) OR (thong cong)) ((tinh cai) OR (trinh cai)) tu~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh doanh cua ((nhung don) or (thong cong)) ((tinh cai) or (trinh cai)) tu*.