Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
hang cong » dang cong, hang nong, bang cong
tung cao » nung cao, truong cao, trung cap
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh tung cao ((nhung cong) or (hang cong)) ((dan than) OR (ban than)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung cao ((nhung cong) OR (hang cong)) ((dan than) OR (ban than)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung cao ((nhung cong) or (hang cong)) ((dan than) OR (ban than)) cap".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung cao ((nhung cong) or (hang cong)) ((dan than) OR (ban than)) cap*.