Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh doanh » hang doanh, chinh doanh, doanh doanh
cua thuong » cua truong, cua phuong, ca thuong
hoc thieu » toc thieu, hoc hien
hua khong » hoa khong, cua khong, hoac khong
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - hanh doanh ((hua khong) or (cua thuong)) cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh doanh ((hua khong) OR (cua thuong)) cong san van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh doanh ((hua khong) or (cua thuong)) cong san van ban*.