Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh sinh » thanh binh, thanh tinh, thanh vinh
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu, sinh va
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan 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 - thanh sinh cua ((nhung cong) or (hang cong)) tan ((than cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh sinh cua ((nhung cong) OR (hang cong)) tan ((than cau) OR (toan cau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh sinh cua ((nhung cong) or (hang cong)) tan ((than cau) OR (toan cau))*".