Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tinh » thanh binh, than kinh, hanh trinh
nhanh tinh » nhanh thanh, hanh trinh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac

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 tinh) or (((nhanh tinh) OR (nhan sinh)))) cua thong cong tan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((thanh tinh) OR (((nhanh tinh) OR (nhan sinh)))) cua thong cong tan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((thanh tinh) or (((nhanh tinh) OR (nhan sinh)))) cua thong cong tan than cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh tinh) or (((nhanh tinh) OR (nhan sinh)))) cua thong cong tan than cap*.