Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
thanh ban » thanh van, thanh bac, thanh bai
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - canh tranh va nhung cong dan ((thanh ban) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh tranh va nhung cong dan ((thanh ban) OR (thanh san)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh tranh va nhung cong dan ((thanh ban) or (thanh san))*.