Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nang huong » nang thuong, nang luong, hang thuong
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, doi chieu
tung cua » trung cua, tuong cua, dung cua
cua nang » chua nang, cua dang, cua hang
than cap » khan cap, thanh lap, than cua

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 tung cua nang huong dan ((than cap) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung cua nang huong dan ((than cap) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung cua nang huong dan ((than cap) or (thanh cac))*.