Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh doanh » hang doanh, chinh doanh, doanh doanh
tai nhung » thai nhung, thi nhung, ai nhung
ho chieu » theo chieu, hoc thieu, doi chieu
tai hung » mai hung, tai phuong, tai thuong
cong tan » cong tac, cong san, cong thanh
than tap » toan tap, han tap, phan tap

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 sach - hanh doanh ((tai nhung) OR (tai hung)) ((cong tan) or (truong thpt)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh doanh ((tai nhung) OR (tai hung)) ((cong tan) OR (truong thpt)) than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh doanh ((tai nhung) OR (tai hung)) ((cong tan) or (truong thpt)) than tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh doanh ((tai nhung) OR (tai hung)) ((cong tan) or (truong thpt)) than tap*.