Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong tan
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac
tung va » trung va, tuong va, dung va
va dung » van dung, va duong, vat dung

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 va dung cong ban ((than cao) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung va dung cong ban ((than cao) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung va dung cong ban ((than cao) OR (than cap))*.